Carol and Duncan had the perfect weekend, for them, because they had been together all of the time, much of the time having been spent having sex. They were now at work so had to switch from lovers' mode to boss and secretary/PA mode but they were finding that increasingly difficult to do.

Brenda Mitchell, another employee of the company, had dismissed the idea that Duncan and Carol might be having an affair when it had been suggested by Allison Cole the previous week but now she was not so sure. Brenda knew that Carol was usually a happy person around the office but currently, she was particularly bubbly, almost glowing, just like a woman that was getting plenty of sex.

Brenda herself was currently single but she was quite attractive and certainly sexy and she rather fancied twenty-six-year-old Duncan Henderson herself, so if Carol was getting shafted by him, Brenda was jealous. Duncan had glanced at the fifty-year-old Brenda in a sexual way from time to time, especially at her firm looking arse, but she put it about too much for his liking if her reputation was to be believed.

Duncan did not expect his women to be virgins, especially as they were almost invariably older than him, but he did not like the idea of a woman sleeping around if he was going out with her.

Brenda saw her chance to quiz Carol when she saw her in the ladies loo in the office, "I could do with a good fucking," announced Brenda.

"I would not think that you will have any trouble getting one," replied Carol who did not intend it to sound quite so catty but she did not attempt to retract it.

Brenda ignored Carol's remark but now said, "You look like you are getting plenty."

Carol thought quickly and replied, "Harry and I do alright," although she was not sure if she sounded convincing.

"Hmmm," was all Brenda replied as she recalled Carol telling her ages ago that she and Harry no longer had sex.

Brenda went away smiling to herself because she was now pretty sure that Duncan was fucking his sixty-year-old secretary but she was unsure what to do with this apparent knowledge.

Carol expressed her concerns about Brenda's suspicions when she was next in Duncan's office so they decided that they had better try to hide their attraction to each other a bit better. Brenda continued to observe them and she detected the new coolness which she took as being further 'evidence'.

Carol went home after work on Monday to get outfits to wear to work on Tuesday and Wednesday and she was quite happy that she had two more nights in her lover's bed. Duncan and Carol talked more about Brenda's apparent suspicions in the evening with Carol particularly worried.

"But what can she do? It is none of her business," said Duncan.

"No, but if my Harry or your parents found out there would be hell to pay," said Carol.

Brenda was actually thinking about her options if she got proof of her suspicions but the options did not include informing anyone else. 

By bedtime, Duncan had managed to reassure Carol a bit and she had now mostly got her mind on the sex that they were about to have.

The naked couple were soon in the sixty-nine position with Duncan on top lapping at Carol's wet cunt as she licking and sucked his rock hard cock. After doing this for quite a while it was decided that cock and cunt should meet again so Duncan once again eased his penis into Carol's vagina.

The lovemaking was slow and measured and Duncan took Carol to two orgasms before his body tensed and he again shot his cream into her wet cunt. They lay with Carol's head on Duncan's chest as Carol once again said that she was worried about Brenda.

"What can we do, though? We can hardly ask her if she thinks that we are having an affair, can we?" said Duncan logically.

"No, I know, we will just have to be careful in the office and hope that she either forgets it or hope that we are imagining things," replied Carol.

They arrived at work several minutes apart on Tuesday and kept things purely business-like during the day as Brenda contemplated her next move. She was undecided what to do but whatever it was she was determined to use any affair between Duncan and Carol to her own advantage.

Brenda teased Duncan a bit by giving him quite a sexy smile and that did make Duncan think that Brenda was very fuckable.

Nothing untoward happened during the working day and Carol and Duncan were back at his house for what was to be, for the moment at least, their last night together.

Harry had texted Carol to say that he and Tony would be travelling home on Wednesday evening and that he should be home in the early hours of Thursday. Carol sent a text back saying that she was glad that he was having a good time and she said that she missed him, although she obviously did not really.

There were still marks on Carol's backside from the caning from late Saturday night as Duncan kissed her buttocks as she lay on her stomach on the bed. Duncan played with her arse for a while and he giggled as he had her coming as he fingered and tongued her anus. Carol was then on her hands and knees as Duncan held his cock against her arse crack before moving it to her cunt and entering her.

"Fuck me hard Duncan, I want it hard and fast," said Carol as her lover's penis slid into her.

"If that is what you want then that is what you get," said Duncan as he started thrusting.

He had never fucked her harder and faster than this and after a while, the panting Carol shouted, "Yes, yes, oh fuck, yes," as she had yet another Duncan Henderson created orgasm.

Duncan fucked on and on and they were both grunting and sweating and Carol kept cumming before the friction on Duncan's penis meant he could take no more and he came with a long groan.

"Fuck, that was quite something," said Duncan as he got his breath back but he did not get any immediate response from Carol because she was still panting.

"Well, I did ask for hard and fast," she eventually managed to laugh.

They had the prospect of more sex after work on Wednesday but this was their last night in Duncan's bed for a while it seemed. They arrived at work on Wednesday with no confirmed plans of where to have sex after work, just the assumption that they would do so.

Brenda noted to herself that Carol again looked like she had had a good shag and she was convinced that she knew who had given it to her. She did not know how she reached the conclusion but she decided that it might be worth her while not going straight home after work this coming evening.

During the day after doing some secretarial work with him, Carol said to Duncan, "You have not fucked me over this desk of yours yet have you?"

"No, I could after work today after everyone has gone if you want," said Duncan thinking that he would love to shaft her from behind over this piece of furniture.

"Yeah, but in case anyone is suspicious I will leave on time and come back after the others have gone," said Carol, something that Duncan thought was a good idea.

The office got cleaned in the morning before everyone started whereas some offices had their cleaners come in in the evenings so once all the staff had gone Carol and Duncan should have no fears of interruption.

Brenda Mitchell still had the idea that there might be something happening that evening, even after Carol made a big show of saying, "See you in the morning," to Duncan before she apparently set off for home. Brenda left soon after but as she lived within walking distance of the office she resolved to come back there a bit later.

Carol waited about half an hour before driving back to the office and all cars other than Duncan's had left the car park although she had no way of knowing if the office was otherwise empty. She went back inside and it seemed to be deserted, she even checked in the ladies loo, and she made her way to Duncan's office.

"It seems that we have the place to ourselves," said Carol before she and Duncan locked in a kiss and he pawed her buttocks.

"You want fucking over the desk then do you, young lady?" said Duncan as he got behind Carol and undid her skirt and had it drop to the floor.

"Yes, I want my boss giving me a good fuck over his desk," confirmed Carol as her knickers were dragged down and she stepped out of them.

At this point, Brenda Mitchell was back at the office and she was delighted but not surprised to see both Duncan's and Carol's cars there. She quietly entered the building and crept in the direction of Duncan Henderson's office.

Duncan bent the bare arsed Carol over his desk before dropping his own trousers and boxers to his feet and dragging his erect cock up and down Carol's arse crack. Brenda was now at Duncan's partially opened door and she put a hand to her mouth to stifle a gasp as she saw Duncan thrust forward as his cock entered Carol's cunt.

Brenda was fascinated watching Duncan's firm buttocks as he thrust quickly in and out of Carol's cunt and she felt her knickers inside the tight trousers that she was wearing getting very damp. She decided that now was the moment to make a move.

"Oh, sorry to disturb you, Mr Henderson," said Brenda announcing her presence as she entered the office.

Duncan turned with a look of horror on his face and with his cock embedded deep inside Carol.

"Um, I..." started Duncan as a red-faced Carol, sprawled over the desk, turned her head towards Brenda.

"Evening, Carol," said Brenda with a huge grin as she started to lower her own trousers.

"Brenda, what..." was Duncan's next attempt at starting a sentence but the confident Brenda was in charge.

"Don't worry you two, I am not going to tell anyone, I just want some of what she is getting," said Brenda who had now removed her trousers and her knickers.

Carol was still bent over the desk and Duncan still had his cock in her but the change in circumstances had got his penis softening a bit.

"You are going to fuck me, Duncan. You know that you want to. Move over, Carol," said Brenda as Duncan stepped back and his now only semi-erect cock swung free.

"Brenda, look don't tell..." said Carol as she spoke for the first time since Brenda had made her presence known.

"Relax Carol, I just want some of this cock, " said Brenda as she stroked Duncan back to full erection.

"I think we need this desk now, " said Brenda pushing a dazed Carol out of the way and bending over Duncan's desk herself.

"Fuck me, Duncan," said Brenda thrusting her shapely arse towards him and Duncan looked at Carol open-mouthed.

"Better do what she says," said Carol thinking logically but not as a woman who might be about to lose her lover.

Duncan looked at Brenda's backside and her cunt just below it and his penis twitched. He again looked at Carol who just nodded her approval and Brenda sighed as Duncan Henderson slid his hard penis into her.

"Oh fuck, yes," said Brenda as Duncan started slamming her.

Duncan's mind was all mixed up but one thing that he did know was that his penis was fucking a very receptive cunt and Brenda shouted, "Harder," an instruction that he complied with. Brenda's next words were, "Shit, oh fucking hell, fuck, yes," as she came and Duncan kept fucking her thinking that one good fucking might make her leave him and Carol alone.

Carol was watching her lover give another woman a good fucking and she was just feeling numb. She was not finding it erotic she was just finding it surreal. Duncan, at this moment, had almost forgotten Carol as he fucked Brenda Mitchell over his desk and shortly after she shouted her way through another orgasm he ejaculated deep inside her.

The strange tableaux remained the same for a while before Brenda said, "Shit, Carol, he is good, no wonder you look so happy."

Duncan had now withdrawn from Brenda and she slowly got off the desk and turned around, "Now perhaps we should chat about our futures," she said and Duncan and Carol looked at each other.