My wife was in hospital and had been in and out for months. It was coming up to her forty first birthday and I decided to hold a party to help cheer her up. The problem was that I'm not very good at catering. A friend recommended a woman, Sarah, that does private functions so I gave her a call. She dropped around the following evening to discuss what I wanted. She was very good, she had preset menus or you could mix and match also there were hot and cold options. We went through it and agreed what was required. The day before the party Gail had some further complications and the hospital insisted that she had her afternoon at the party and back into hospital for nine p.m. Well it was a great afternoon and just before nine I left Sarah and a couple of friends clearing up. On my return Sarah had just finished loading her van and came back in to remove the rubbish that she and our friends had bagged up. Our friends had already left. As she lifted one of the bags it split and spilled the rubbish on the kitchen floor. I bobbed down to pick the rubbish up at the same time as Sarah did and we bumped heads. We both ended up laying on the floor and laughing. Then as we both went to get up Sarah suddenly kissed me. It was along time since I was last kissed and although I knew I shouldn't, I liked it and returned the kiss. We were soon swapping tongues and as my hand went to her tits she stroked my cock through my trousers. My other hand went round to fondle her arse. It all felt so good. Then things got out of hand when her hand went down my trousers and into my underpants and stroked my cock. I was such a long time since Gail was able to enjoy sex and I had been faithful up until this evening. I felt so weak and Sarah was stirring up feelings I hadn't felt for a long long time. Then I couldn't help myself as I slipped a hand into Sarah's blouse and bra. She was better blessed than Gail and it was the first pair of tits other than Gail's that I had touched for over fifteen years and they felt great. Gail was pushing her tongue deeper into my mouth and somehow moaning at the same time. I was getting close to coming and had to stop Sarah or I was going to embarrass myself. I really didn't want it to end so I suggested we go and get more comfortable. I led Sarah to my bedroom and laid her on the bed and laid with her kissing her. Our hands were roaming over each others bodies. Then we were divesting each other of clothes. Sarah was a bit more rounded and fuller figure than Gail and I enjoyed having plenty to get hold of. Then I slipped down her body and between her legs. I was licking her pussy and clitoris. Gail never enjoyed this so I was making he most of it and so was Sarah as she groaned and moaned. I was also reaching up and playing with those lovely large tits, rolling the nipples around. "Fuck me, fuck me now," Sarah insisted. I slid up between her legs with my cock at her entrance. Her legs wrapped around my back and her hands were on my arse and pulled my cock into her pussy. Sarah was thrusting up to get as much cock as she could into her pussy as I pushed down to meet her. I could feel the tension building in me and then Sarah was going wild and thrashing around as I came and pumped my offering deep into her pussy. As my cock shrunk and slipped out I rolled over onto my side. I could see that I had left a huge amount of cum in Sarah's pussy. Not surprising as it was ages since I had last masturbated. Sarah laid there for a short while and then started to stroke my cock again. She told me that she too had not had any sex for a long time as her husband had left her two years back. As some of my cum started to trickle from Sarah's pussy I rubbed it into her clit. Sarah started to moan again and I started to grow down there again. "Fuck me, fuck me in the doggy position," Sarah ordered, it wasn't a request. I didn't care. As Sarah placed herself in the doggy position I slipped behind her and pushed my cock back into Sarah's soaked pussy. With all that cum still in her pussy, it felt different. This time we both lasted ages before Sarah had her second orgasm and I shortly followed and pumped even more cum into her already saturated fanny. We ended up cuddled under the duvet and drifted off to sleep. Next morning we showered together and made love again stood under the cascading water, kissing as we screwed. We came together and finished soaping and rinsing each other off before toweling each other dry. Then after a nice kiss Sarah went off home. This became a regular Friday night date. My wife was still spending more time in hospital than home and on one visit home suggested that I should find myself a lover. I felt guilty and ended up confessing that I already had. I was amazed that she was pleased and not upset at my confession. She asked who it was with and I told her about Sarah. Gail suggested that I move her in as she would be great company for me. I said what about when your home. She just said we could work something out. That Friday as we lay in bed after some more wild sex I asked Sarah to move in. It was now that she confessed that she was still married and living with her husband. I was just her bit on the side and her husband was in full knowledge of our sexual tryst and enjoyed hearing all about it. Sarah never did move in and after a further two year period she moved on with another man. Gail's health slowly improved and about six months after Sarah stopped coming to me Gail returned home full time. It was a slow recuperation, but we are now able to make love fully again. I was grateful that Sarah helped us through what was a tough period for us, but I wished that she had been more up front about her husband.