I had been friends with Martin for years after we met at work, this is going back to the early 90's. We hung out together and he often came round to my house for tea and afterwards we would often go out for a drink. I was very aware that Martin fancied my wife Julie who was tall, with long blonde hair and had big boobs. He would often make passing remarks about her boobs and how much he would love to play with them. I had of course mentioned this to Julie who just laughed it off. Anyway one Friday night Martin and I had been out for a drink and had had a few beers and were both slightly drunk at the end of the evening. I suggested to him that he stay overnight at ours rather than wait for a bus and we had a spare room already made up. He thought that was a good idea so we made our way back to ours. Julie was still up when we got in and could see we were both a bit worse the wear, but even so, I made the three of us a coffee and we sat in the lounge drinking it and making small talk. Julie finished hers first and announced she was off to bed. Martin and I stayed up a little longer and once more Martin started saying how much he loved Julie's tits. I jokingly said "Why don't you do something about it then ?" Martin just laughed and said "I would be so lucky". After a few more minutes Martin said " Is it it ok if I go up now ?" I replied "Sure, I'll just tidy up down here, see you in the morning" At that Martin left the room and I could hear him going upstairs. I tidied up, locked up and made my way upstairs. As I got to the top I could hear noises coming from our bedroom so I stoped on the landing. I could hear Julie muttering " You naughty boy, you shouldn't be doing that" and I could also hear mumbling noises from Martin. I slowly opened the bedroom door and looking in could see a naked Martin lying on top of my wife who was also naked and he was sucking on her big breasts and squeezing them in each hand. Julie saw me and just smiled as if to say "What could I do?" I decided to join in the fun and quickly undressing, lay down next to Julie and began kissing her, before putting a hand down and started rubbing her very wet pussy. Julie was by this time moaning with pleasure and she reached down, pulled Martin up towards her and reached for his hard cock which she started to rub. I turned my attention to her tits and started to suck them and at this, Julie lent down and started sucking Martin's cock. He had hold of her head in both hands and was pumping his cock into her mouth. After a few minutes of this, he let out a large groan and came in her mouth. Julie didn't stop and sucked every last drop out of it. Martin collapsed on the bed on one side of Julie and I lay on the other, still sucking on one breast and rubbing her pussy, it wasn't long before Martin started sucking the other one and within a very short time time Julie came very loudly. We had a few minutes without saying anything but I noticed that Julie was rubbing Martin's cock back to stiffness whilst also paying attention to mine. Without saying anything further, Martin pushed Julie's legs apart, climbed between them and slid his now hard again cock into her pussy. Julie let out a small scream of pleasure and Martin began to slid his cock in and out. He had hold of her breasts again and would lean over and suck them whilst fucking her. Not wanting to miss out, I moved up the bed and pushed my cock into Julie's mouth. This went on for a few minutes before I could feel myself coming,. rather than come in her mouth, I pulled out and shot my load all over her tits, rubbing my cum into them, making them all slippery. It wasn't long before Martin started groaning again and said he was going to come but Julie just grabbed his bum and pulled him further into herself and Martin shot his second load of the night deep into her pussy. We all collapsed on the bed grinning at each other and Julie just said "You naughty boys" Martin eventually left us and went into the spare room. Julie and I both got cleaned up and soon fell asleep. When I woke in the morning I was alone in bed but I could hear creaking noises coming from the spare room. Getting up, I went to investigate and looking into the room saw Julie, naked, sitting on top of Martin, riding his cock, Martin was lying on his back, reaching up and playing wither her tits.. I watched for a short while but decided to leave them to it. Since that time, Martin has fucked Julie many times, both at our house and at his.