The limo soon pulled up at the curb. Zach was a bit relieved because he was starting to feel the effects of the cold night air. His nipples were standing straight out and hard like peanuts and having Richie nestling into him from behind while they waited hadn't helped. In fact Zach was sure he could feel something hard pushing out from Richie!

Richie opened the door for Sara after waving his driver off. He drank in the sight of Sara's arse as she climbed in awkwardly. He just loved her backside and he strained to see if she was wearing any underwear, as she often didn't when they were out on the town. He thought he saw a hint of panty line but in the dimness he couldn't be sure. As he walked to his side of the limo he told himself he'd find out the answer to that question, before they got home!

It wasn't long into the ride home before Zach found himself snuggled into Richie. When he looked at his date, Richie leaned over and kissed Sarah full on the lips and within seconds tongues were exploring. Zach had already committed to being Sarah fully so he allowed things to progress and when he felt Richie's fingers on his nipples a shiver raced through his female body.

The petting continued and Zach found he was able to reciprocate the fondling, well he was ok stroking Richies face and neck at least. When Zach felt Richie's hands roam to his knees he was a little unsure of himself and as Richie's fingers began working their way up under the hem of his dress Zach wasn't sure what if he had done the right thing.

Zach was beginning to wonder how long it would be before they got back to Richie's place as he was feeling a little too aroused by the attention he was getting. Inch by inch Richie worked his fingers up Zach's thighs, dragging his dress up as he went. Zach didn't stop the activity but he was now having an internal battle with his conscience. Should he stop things now, before he went too far? Should he allow life to take its course like he had planned earlier? Could he let Richie treat him like a woman sexually? Was there any possible side effects of any sexual activity on the process that had made him into a copy of his wife? He tried in his tipsy state to remember all he could about the formula.

As the caressing continued Zach decided there was nothing mentioned about side effects in the documentation. If there was it would have been highlighted. One thing was for sure, Zach was feeling way too aroused and he even felt himself sort of leaking between his legs. His panties must be damp at the crotch now he thought. Lucky he went with black knickers.

Richie felt his hot girlfriend in his arms and he played a game with his fingers, slowly closing in on her crotch. He was betting with himself as to the existence or not of panties. He was enjoying the way Sara was responding tonight, though she seemed a little more reserved than usual. Occasionally she would beat him to the punch, so to speak in the groping stakes. Tonight she seemed to be playing a little coy, which is something they had also done together. Richie was ready for a hot night, as it had been a little while since he and Sara had last been together. Her bloody husband Zach had been around way too much lately. Now he was away on business, it was a perfect opportunity for some extended fun with Sara.

Finally Richie's moment came as his fingers danced across satin as he felt Sara's wet crotch through her panties. He'd bet on no panties but no big deal, he was sure it would be no panties soon enough! His fingers focused on the spots he knew well and Sara jumped at the first touch. Richie was surprised at the reaction, still it seemed like she was soaking, so things were looking up.

Zach was jolted from his thoughts by the electric touch of Richie's fingers reaching his pussy. He jumped with a start at the feeling and as Richie began working his magic on the spots he knew so well, Zach was amazed at how good it was feeling. He tried to act nonchalant and as if this was an everyday event but his body was on fire and he didn't know how to quell it. Zach began to wonder if he could stop things now, even if he wanted too!

Zach also wondered if this was cheating on his wife? Was he being just as immoral as she was, by going any further with Richie? What would happen if she found out? What would happen if there was say, a message from her on Richie's answering machine when they got back to this place. How would he explain things?

All this pondering was moot of course because Zach was losing control of his emotions and his body. He even found himself slightly pushing his hips against Richie's exploring fingers. Zach didn't know what usually happened either. Maybe this was just a warm up for when they got back to Richie's place. Would anything happen before they got home. He figured he hadn't caused any suspicion in Richie either to this point, so hopefully he was still safe from detection. He also knew that it was more than likely now, that he would find himself making love to Richie before the night was over. The way he was feeling now that could be just what he needed, because Zach had never felt so aroused in his entire life.

Richie was ready for the next stage, with a deft flick his fingers parted Sara's knickers to one side and the warm feeling of pussy enveloped his fingers. He heard her gasp a little but no matter, he continued on. Now without the material covering it, Sara's slit was exposed and open to Richie's probing fingers. Over and over he worked the sweet spots of her pussy, making her shiver and shake a little. Richie even thought he detected a low growl from his woman. Richie loved bring Sara to the brink with fingers and allowing her to come down a little. Tonight was nothing new as he parted her lips and pushed the hot buttons inside before retreating just enough to prevent her from going over the top.

Zach was swimming in the feeling when all of a sudden he was exposed! The panties which had previously been nestled snugly in the crack of his backside, and draped over his pussy were suddenly three inches to the left, and his whole undercarriage was now free from its satin confines. Zach gasped with the shock of the move and for a split second was frozen. He was now in a place that was out of his control as Richie's fingers were in Zach's fleshy slit and making him hotter than before. Zach was unable to rationalise anything right now. The drinks, the nice dinner and the attention from Richie, combined with the arousal of the last few minutes were overpowering. His body was responding to Richie's touch in a way he could not have fathomed. One thing was for sure, he knew Sara had never reacted like this with him. In fact when Zach found himself letting out a soft gutteral type groan, he was in virgin territory. Never had Sara been like that with him. It was like Richie knew exactly where to touch him. Zach thought he was about to explode but for some reason Richie didn't quite maintain the contact long enough. Zach was hot and breathing hard and all he wanted was for Richie to finish things.

Zach wondered that maybe he should try and reciprocate Richie's efforts to get what he now needed. Would Richie feel better if Zach did something to him, maybe play with him? Could he do that Zach wondered. This was way out of hand now and Zach was losing all perspective as Richie brought him to the brink again. Zach couldn't stand much more!