"Okay, Mom. I've got all my stuff packed," I said as I made my way to the steps.

I could tell my mom wasn't happy about my decision to spend my summer vacation with my father and stepmom in Indiana.

But I was now eighteen, and I think she was worried I would just move out there to live if she made a big fuss about it.

You see, my parents divorced back when I was twelve, and from what Mom had told me, she caught dad having an affair.

That's why Mom didn't care for Dad now, and I did my best not to show my excitement.

I was especially over-anxious to meet my stepmom for the first time. I had never met her since Mom was dead set against me visiting Dad.

But from the pictures I had seen of her, she was a total fox. One photo, in particular, would cause my dick to twitch every time I looked at it.

It was a picture of them standing arm in arm on a beach. Dad was in red swim trunks and Bethany, my stepmom, had on this super sexy hot pink bikini.

I swear it barely covered her perky, sizeable breasts. The material was so thin it was easy to make out her huge areolas as they jutted out from the fabric.

Bethany looked much younger than Dad in the photo and had long, black hair. Her eyes were brown, and her lips were full. I'm not sure of her height yet, but her head was just about to my dad's shoulder.

I never could understand why Dad would have an affair, since my mother is the sexiest forty-two-year-old woman I know.

Mom is about 5'2 and a slim build. Her chest size isn't as large as Bethany's; she's about a C cup. Her hair is straight, blonde, and just below her shoulders. Her eyes are blue, and like Bethany, she has full lips.

From time to time, as Mom cleaned and moved around the house, my eyes would catch her firm and circular bum as she bent over. This would always cause a rise in my shorts. Even on occasion, I wonder what she would do if I just reached out and grabbed her ass.

I never considered my erotic thoughts of Mom nasty or thought of it as improper getting turned on by my mother. She limited my dating experiences to be virtually nonexistent. So my only relief would be to jerk off to images of her as I laid in bed.

"You are sure you packed your underwear and socks," I heard from the other room.

"Yes, I'm sure. Mom, when are you going to treat me like an adult? I am eighteen now," I said in a huffy voice.

"Never... You're always going to be my little boy, and there's nothing you can say or do to change that."

I just rolled my eyes and made my way to the car. I opened the trunk and tossed my luggage inside. Just then, I felt a soft hand upon my shoulder.

"I'm sorry, Tyler. I know you're an adult now. I'll just have to accept the fact that my little boy has grown up."

I could see Mom's eyes tearing up, which made me turn and give her a big hug. She wasted no time embracing me tightly, and I could feel her soft breasts press firmly against my chest.

My dick began to strain against my blue jeans as we held our embrace for more than the usual time. Quickly, I broke away before it was evident I was getting hard.

"You want me to drive, Mom," I said when I noticed her tear-filled eyes.

"Yes, I think that would be best."

As we drove toward the airport, I could see Mom getting more and more depressed, so I tried to say something to make her feel better.

"Mom... It's only for the summer."

"I know, sweetie. It's just that I've never been alone before."

"You know I'm only a phone call away."

Mom just smiled and patted my leg.

Leaving Mom behind was more complicated than I thought, and we hugged one last time before I got on the plane.

However, once again, I became aware of Mom's breasts as they squished between us and sent my dick into full hardness. Then I felt this strong urge to lower my hands down and grab her ass.

Thankfully, Mom pulled away before I could act on my perverted impulse.

The flight to Dad's wasn't long, and he and Bethany greeted me.

Holy fuck! I thought. Bethany was even younger and sexier than the photos I'd seen.

Dad hugged me, and so did Bethany. And once again, my dick went stiff when her fantastic jugs pressed into me.

As we walked around to the luggage area and then to the car, I couldn't stop myself from watching Bethany's ass as it swayed from side to side.

The tight white pants she wore showed off her sexy, firm bum beautifully. Like when I hugged Mom for the last time. I wanted to reach out and take hold of her marvelous ass in both my hands and just squeeze.

You're one horny dude today. I thought to myself as we finally reached Dad's car.

The ride to Dad's house was long, but the conversation never hit a low. As Dad drove, Bethany and I talked, and I had been right about her age. I was shocked when I found out she was only six years older than me.

Once at the house, Dad unloaded the car while Bethany showed me around. I knew Dad did well in business, but never thought he would own such a sizeable house.

The downstairs had a large dining and living room, along with a recreation room in the back of the house. The kitchen had a white tile floor with tan granite tops and barstools around an eating area. The upstairs was just as impressive, with a master bed and bath and three bedrooms that had their private bathrooms.

Bethany then took me outside behind the house and showed me the concrete patio surrounding a large in-ground pool and hot tub. Behind the pool were many mature trees and a lush green lawn. A tall, white privacy fence enclosed the entire yard.

Dad met us in the backyard, and we sat on the patio talking some more before calling it a night.

Dad showed me to my room and said, "Goodnight, son. I hope you enjoy your visit."

"I'm sure I will."

After Dad left, I sat beside the bed and called Mom to tell her I made it okay and that I missed her. Mom expressed how she missed me also and asked about Bethany. I didn't want Mom to get upset once more, so I played it down, saying how she looked plain and didn't bother to mention how young she was.

We talked for another ten minutes and then said goodnight. I promised to call Mom again soon.

I didn't feel like looking for my PJs, so I just stripped naked and turned off the light. I then crashed onto the bed and looked up at the dark ceiling, and pictured Bethany's ass as it swayed in those tight white pants until I fell asleep.

When morning came, I had a raging boner. Bethany's sweet ass was still dancing in my brain.

Well, there's only one thing I can do. I thought to myself and headed for the shower. As the hot water washed over my back, I jerked my cock to Bethany's sultry image.

I was just about to blow my load when I heard, "Oh, I'm so sorry."

Being startled, I turned towards the glass doors and, with my stiff cock still in my hand, saw Bethany standing there looking down at my rod holding a bunch of towels.

Seeing Bethany staring at my cock caused me to explode. My cum plastered all over the glass door, and I heard Bethany say, "Oh!" before she quickly turned and rushed out.

I felt embarrassed by what had happened but also excited. Quickly, I dried myself off and dressed. I figured I should apologize for what I did and went in search of Bethany.

 She was in the kitchen cooking breakfast, and I immediately told her I was sorry.

"No, I'm sorry, Tyler. I shouldn't have entered your room like that. I was in a daze and didn't realize you were taking a shower, and um... You know... relieving yourself."

"That's okay. I was kind of in a daze myself," I chuckled. Hoping that would break the tension I felt now between us.

"Missing your girlfriend back home?" Bethany questioned.

"Um... No, I don't have a girlfriend. Mom was kind of strict about me dating. She thought it would have interfered with my schoolwork."

"Oh, that's too bad."

"I was actually thinking about this new girl I met. I can't seem to shake her from my mind."

"Well, I hope she knows how you feel about her."

"I think she does now," I said.

Bethany stopped cooking and just stood there looking at the frying pan.

Oh shit, I went too far. I thought.

Think idiot, think before she says something.

"So, where is Dad?"

"Uh... Oh... Your father already went to work. Take a seat, as these are just about finished."

"You didn't have to make me breakfast."

"I don't mind. Besides, I don't like eating alone."

Bethany and I ate and talked for about an hour. She told me how Dad had been leaving early and staying late at work for the last couple of months.

When we finished, I offered to wash the dishes, but Bethany sent me on my way. I went into the living room and turned the television on.

I wasn't aware that Bethany finished the dishes and changed until she came into the room wearing her tiny bikini. My mouth watered as I gazed at her beautiful half-naked figured and could feel my cock stiffening in my pants.

"If you need anything, I'll be out back laying in the sun," Bethany said as she walked away, shaking her barely covered ass.

Quickly, I went up to my room and peeked out the window. I couldn't believe my luck when I saw Bethany lying next to the pool with her marvelous ass sticking up.

My hand went to my cock, which was already stiff, and I fondled it until I noticed her move and hid from view.

I waited a couple of seconds and steadily peered out the window once more. Bethany was now lying on her back with a pair of dark sunglasses that made it impossible for me to tell if she could see me spying on her.

I stood there and jerked off, wishing I could run my hands over those wonderful tits until I came.

Cleaning myself up, I went back to the living room and watched TV until Beth was finished tanning.

"So you feel like seeing some sights?" she asked.

"Yeah, that sounds like a great idea."

Beth went and changed, wearing a pair of faded blue jeans and a tight white tee shirt. I couldn't help but lock my eye onto her breast when I noticed her nipples pressing hard against the shirt.

"Hey... Eyes up here," she said laughingly.

"Oh, sorry," I replied, feeling my face blush.

"You young men are all like. Only thinking of one thing."

"Well, it's hard not to when your stepmom is a hottie!"

Beth gave me a skeptical look and chuckled before asking if I was ready.

I sprang up, and we headed out the door.

Time seemed to fly by as she showed me around town, and I thoroughly enjoyed being with her. I wished it didn't have to end, but we had to make it home before Dad arrived so Beth could make supper.

Beth was a great cook, and I complimented her as we all sat and ate dinner. Dad asked what I did for the day and told him about Beth and me sightseeing.

He explained what Beth had already said to me about working late and wished he could take some time off. However, his deadline made it impossible to do so.

Bethany spoke up and said she didn't mind keeping me company, and I felt pleased hearing that.

After dinner, we all went out back to the patio and made more small talk as Dad and Bethany enjoyed a glass of wine. I was feeling tired and excused myself, saying I had to call Mom before going to sleep.

Mom seemed a little upset when I went over what we had done so far out here and questioned me more about Bethany.

It was getting more challenging for me to disguise my true feelings for her and exactly how hot she was. I think Mom saw through my attempt, but didn't let on when we said goodbye.

The next couple of days were just like my first. Beth would lay out; I would jerk off, and we would go sightseeing until Dad came home at night.

Then came the morning Beth was tanning, and I noticed her hand leisurely go between her legs and lightly tickle her pussy through her bikini bottoms.

My mouth dropped along with my pants, and I stroked my cock feverishly to the sight before my eyes. I was just about to explode when Bethany suddenly stopped and lifted her glasses. I stood frozen when I saw her looking up at my window.

To my amazement, Bethany quickly went back to rubbing herself but also moved her other hand to a breast, playing with her nipple through the bikini top. I could see by her expression she was getting into it until the phone rang.

Bethany fixed herself and went inside to answer the phone. I was way too close to shooting at that point and finished myself off in the bathroom.

"That was your father. He's working late tonight, so it will just be us at dinner," I heard Bethany yell.

"Oh, okay," I responded as I cleaned myself up.

I went back downstairs to find Bethany in the kitchen sipping a glass of ice tea. She asked if I wanted a drink. I nodded yes while taking a seat at the table. She rose and went to the fridge.

I couldn't take my eyes off her sexy figure and hoped I would get another chance to see her masturbate.

However, Beth caught me gawking when she looked over her shoulder and smile.

"Jesus, Tyler, you would swear you never seen a woman in a bikini before."

"Well, not one with such a sexy body," I said.

"My god, I think we need to find you a girlfriend and quick," Bethany laughingly said.

So as we sat and drank our tea, Bethany came up with a plan for the rest of the day. She and I would go to the public pool. Beth figured I would be able to meet girls my age and just maybe hit it off with one of them.

In reality, I wanted to go back to seeing her tickle her twat and was kind of surprised it was never mentioned.

Maybe she didn't see me?

Bethany changed into a slim, black summer dress and drove us to the pool. Once inside, we found a grassy spot, and she laid out a towel and pulled the dress over her head, revealing a different swimsuit.

This one was a red one-piece that was more conservative. It still showed off Bethany's sexy figure and accented her gorgeous ass.

However, it covered most of her bum, unlike the bikini did.

"We'll... Get going. I see a lot of sexy girls for you to meet," Beth said, pointing to the pool.

I tried to make some small talk and introduced myself to most of the girls there. Nevertheless, being a stranger, I didn't have much luck. Either they already had a boyfriend or questioned me about the girl I kept staring at.

It seemed out of all the girls here. Bethany still had my eye, and I couldn't hide the fact.

I was just about to give up when Bethany waved me to come over and noticed a girl about my age next to her.

"Tyler, this is Heather," Bethany said.

Heather was a very nice-looking girl with long chestnut hair and brown eyes. She was about as tall as me and had a slim figure. Her little perky tits were jutting out of her black one-piece, and I just smiled and shook her hand.

It turned out that Bethany and Heather knew each other from the neighborhood, and Bethany explained how I didn't know anyone yet.

The rest of the day was spent talking with Heather and her friends. Bethany came up to us and said she had more things to do. She then asked Heather if she could give me a ride back home, to which Heather simply replied, "No problem."

It was almost dark when we left the pool, but Heather and her friends also had plans for the night. They asked if I wanted to join in, and I was more than willing to agree.

Heather dropped me off at home, and I told Bethany about going to the drive-in with Heather and her gang.

I devoured something and changed clothes. My lusting over Bethany seemed diminished, and I was now interested in seeing what might happen with Heather.

I heard a car horn beep and said goodbye to Bethany.

"Don't stay out too late," I heard as I closed the door.

The drive-in was okay, but nothing advanced any further with Heather and me. Even after I tried some of my slick moves, it appeared friends were all she was looking for. So I did my best not to show my disappointment as we watched the movie.

After the movie, the group wanted to do more stuff, but I was getting bored and asked to go home. So Heather dropped me off before they headed onto their next night adventure.

The house was quiet, and I figured dad and Bethany would be sleeping, so I went into the kitchen to get a glass of ice tea. However, as I poured the glass, I heard bare feet walking across the tile floor and turned around.

Holy Fuck! I thought as Bethany walked towards me wearing a sheer milky sleep shirt that clearly showed her naked breast and white bikini panties underneath.

"Oh, sorry for the intrusion," Bethany said as she sat upon a chair closest to the...