My partner and I are in our mid thirties and enjoy the better things in life. I am 35 and drive a mini cab. Sharon is 34 and is an ambitious sales manager. She earns considerably more than me. Most of her income is commission based and she uses all her resources to get a sale. Most of her clients are male so she is not adverse to flirting to close a deal. She hasn't had any children yet and works hard to keep her figure in great shape. She always had a small bust so a couple of years ago she had a boob job to boost them to 32D. At work she always wears a business suite with pencil skirt and white blouse. She has admitted to leaving buttons undone if it helps a sale. Recently she had a prospect from a U.S. company which if it comes off will be life changing for us, I could give up working lates every week. The CEO of the company was invited over here for a site visit all expenses paid. He was only here for two nights. The first night he was taken out by the board with Sharon. The next night it was left to Sharon to organise. I was on shift but booked my self out to pick her up at 7 for the 20 minutes drive to a very nice restaurant. I had a booking at 7.30 so was in a hurry, Sharon was to be ready at 7 prompt. I beeped my horn outside and Sharon and she tottered out in impossibly high heels, a short black skirt and a very revealing top that struggled to contain her bouncing boobs. She had pulled out all the stops and looked like sex personified. I didn't have time to object and reminded my self of the commission. All night I kept her image in my mind and how Mr CEO would be lapping up the view. We had arranged to pick her up at 11, she appeared absolutely wrecked at 11.15 helped up by Ron ( the yank) . He helped her in the back, legs akimbo turning around I could see he tiny G string and at one point a nipple out of her top. Ron also got in saying he wanted to get her home and she literally fell into his arms. I didn't let on Sharon was my partner. During the drive back it was plain to see in the mirror that they were kissing. Indeed when I got to a lit area I could see Ron had his hand up her skirt giving her a good finger fuck. Sharon was so pissed she didn't even try to stifle an orgasm. It sounds pervy but I couldn't help but give my JT a rub, I was so turned on. What happened next did shock me though as Sharon pushed Ron back and I saw her head go down to his lap. When we got home he got out with Sharon and asked me to wait, After 10 minutes I couldn't resist peeping up the drive to only to see Sharon on our doorstep topless and continuing to give Ron a blow job. He was literally fucking her face. Excited but full of mixed emotions I returned to the car and couldn't help having a wank. I took Ron back to his Hotel , along the way he joked that he loved English girls, they are so easy. At the end of shift I raced back to find Sharon asleep on top of the bed in just her G string, make up all smudged and cum in her hair. She looked such a tart and I had to have her there and then. I played with her boobs for a while then started to finger her just like Ron did. It was only when I tried to get my cock in her mouth did she wake. It was like she was on fire and we fucked all night like we had only just met. The upside is she did get the deal and as I no longer work nights our sex life has perked up no end. We both relive that night of madness especially when she says that he had a really big cock. The only downside is her bosses want her to fly to the states and I'm not sure I could trust her not to have an affair. On the other hand part of me wants him to fuck her brains out and for her to tell me about it .