Sophie, who I wrote about in "House-Sitting", had ordered herself a vibrator online. Inspired by her friend Sally’s pleasure toy, which had such a dramatic effect on her.

When the package arrived it lay unopened for a couple of days, then one day it had disappeared. I was gagging to ask her whether she had tried it yet, but Sophie and I are pretty respectful of each other’s need to masturbate, although we do sometimes share. I thought she ought to enjoy it on her own before I attempted a replay of our experience of borrowing Sally’s. I also liked the idea of her doing it to herself and me watching her through a crack in the door amongst other fantasies.

Returning home from work early one day, I was secretly hoping to catch her experimenting with her new toy. Maybe the tell-tale buzz of the dildo from the bedroom would reveal her guilty pleasure, and I could come in just at the right moment. I knew the sound of her approaching orgasm only too well.

The idea of this scenario had got me wanting to take care of my own urges and experience what she must have done on her own by now. Finding myself alone in the flat, I poured myself a drink, went into our bedroom, and changed out of my work suit as far as my mini trunks. Sophie had bought them for me for Xmas and I had (rather naughtily) bought her a pair very similar to Sally's red silk ones that she had used to get off last time. We had some great sex in them that night, both wearing our Xmas specials, but since then, they had just been filed away in her drawer for a special occasion.

I was hoping that my panties present to her would spice up our sex life. Obviously, something was missing from the equation and that was the dildo which Sophie had only ever experienced that one time at Sally's. I knew that we were both equally turned on by that experience. I had suggested buying her one and she was quite keen, even helping me select from the online store with its bewildering range of choices. Naturally, she chose a dildo similar to her friend's, but surprisingly had gone for the eight-inch model.

So now it had obviously been used. Where had she put it? Would it be covered in her juices still? She must have tried it out that day. There could only be one place.

I carefully opened her knicker drawer, shaking a bit in anticipation. Everything had just been thrown in, (unusually for her, she was normally very neat). Lifting up a few pairs of workday control panties, and rummaging beneath the forgotten thongs, I found her prize. Out of sight out of mind! There were the red silk panties I bought her with the rather large dildo wrapped up in them and poking out of the end. I couldn't resist this. She shouldn't be home just yet.

I lay on our bed, keeping my mini-trunks on. They had been rubbing my cock all day and it was now rock hard in anticipation of what I was about to do. Unravelling the hastily rolled panties, the dildo fell out onto the bed, and I couldn't help noticing the red silk was still damp at the crotch. She had obviously been having a go with it. The dildo was still covered in juices, nearly dry now but smelling sweetly of her horny cunt. I licked it. (After all, you should keep toys clean, I reasoned). The next thing, I was turning it on and caressing my balls with it through the thin silky material of my mini trunks. I was tempted to pull her panties on as well, but they were already draped over my face, and I was sucking the remains of her orgasm from the gusset.

"What the fuck do you think you're doing!"

Curiously, this was exactly Sophie’s reaction at the time she caught me going through Sally's drawers.

Sophie had come back home, and I was so lost in my private pleasure, I didn’t hear the door. It was inopportune. The insistent buzzing of the vibrator against my balls, the horny smell and taste of her crotch was just about to bring me off in my trunks and I was lost in the moment.

Sophie, however, softened a little when I confessed that I just wanted to share her pleasure and I couldn't wait for her to show me. I didn't have to.

She slipped off her work skirt leaving her in sheer pale tights on but no knickers, surprisingly for her. She grabbed her dildo, which was now buzzing uselessly on the duvet, waving it at me with a mixture of anger and tease. Before I could protest, she pushed me back down on the bed and picked up her panties, which I had been about to use for my own purposes, and straddled my chest.

"So you want to know about my private pleasure do you?" She taunted.

I knew Sophie got really frustrated at work some days and I suspected that she often got herself off in the shower when she came home. Sometimes we would make love just after that and then she was already wet and came quickly. This was one of those days.

What happened next really aroused me. Sophie rolled her pantyhose down to the middle of her thighs revealing her neatly trimmed bush (I could smell her heady scent now and knew that she must already be wet). Taking the still vibrating dildo, she wrapped it in her red silk panties and inserted it slowly up her cunt.

I had only ever seen her do this once before when she had lost all her self-restraint that morning at Sally's and it brought the memory of that episode flooding back.

When the dildo was about halfway up inside her with the rest of the panties hanging out, she proceeded to pull her tights back up, forcing it further in.

I was about to exclaim how much this was turning me on, when she put her hand firmly over my mouth and positioned the end of the dildo up against my chest. Parting her thighs wide and pressing herself down, I watched the dildo through her nearly transparent tights, wrapped in the red panties, disappear up inside her. Sophie bobbed up and down emitting guttural gasps, with one hand on my mouth to keep me quiet and the other supporting herself on my shoulder.

I couldn't keep my hands to myself nor could I control my aching cock. I grabbed her bottom with one hand and pulled my cock free of my mini trunks. As I did so a spurt of spunk shot out over her pantyhose.

Sophie went over the edge, removing her hand from my mouth, allowing me some air; she grabbed the end of the dildo through her hose and rapidly forced it in and out. All eight inches of it. Her thighs were shaking and I watched fascinated as she came hard in front of me.

Pulling her tights down, the dildo and panties plopped onto my chest followed by a stream of liquid. (Sophie was usually a bit embarrassed when she flooded the sheets in orgasm, but not this time). It splashed onto my chest through her pantyhose. I tried to wriggle forward to lap it up but Sophie simply picked up the fallen panties, wiped her juices off my chest with them, and stuffed them in my mouth.

"Now I don't want to hear another word out of you!”

This was her parting shot as she disappeared into the bathroom taking her dildo with her.