The girlfriend I had after that first threesome was a girl named Tracy. She was a complete nymphomaniac. She was the first of my girlfriends that I shared. She kinda trained me in the art of threesomes. This is what happened the first time of many that I shared her. We were at my best friends house. The one who let me fuck his wife. He kept telling me that night how he wanted to fuck Tracy. One thing led to another. I told her we're going home and Jeff was coming with us. Me and her started making out in front of him, I told her to suck his cock, she unbuckled his pants and started giving him head. I took off her panties and started fucking her from behind while she was blowing him. Then we traded places, he started fucking her pussy just fine. But before long pulled out saying he couldn't continue. After a couple weeks we were at his house again. He had talked his wife into wanting to kiss Tracy. To make a long story short. We got drunk I watched as both of them sucked his cock, then they sucked mine kissing each other in between, I started fucking his wife and he started fucking Tracy next to each other on the couch. It was hot, then in the middle of it he pulled out saying he can't do it. (fuck another chick). So I stopped fucking Sylvia also. He went to his room for awhile then came back out and started kissing his wife, next we were both fucking our own women. Then he got up and left again, Sylvia looked lost but she stayed on the couch and diddled herself while I continued to fuck Tracy. Sylvia looked left out. This was the first time I shared Tracy, but I had been invited to fuck Sylvia on several different occasions. She looked so hot next to us with her legs spread, diddling her clit. I kept looking at her while I was fucking Tracy then our eyes met and she gave me a little smile and that's all it took. I pulled out of Tracy, moved in between Sylvia's spread legs pulled my cock up to her sexy untanned triangle and began rubbing my cock on her pussy, soon I was fucking her slow with deep long strokes. Before long I was fucking her hard, when out of the corner of my eye I saw Jeff come out of the room. I think he was shocked to see me fucking his wife after he couldn't fuck Tracy. He watched me slamming my cock into his wife for a minute or so, but when she started moaning and grinding her pussy back against me, he went back into the room and never came back out. His wife and I fucked for another 15 minutes or so when Tracy moved over and started kissing her and sucking her nipples, that put me over the edge and I came hard up in her. I pulled out, Tracy and her continued to make out. Eventually tracy was eating her pussy, while I was fucking Tracy. I had all kinda crazy sex with her and Tracy that night. As It turns out Jeff was going back to the room to do cocaine. Their marriage went downhill fast after that night. That was the last time I fucked his wife, although her and tracy got together on several occasions. Tracy was fucking her with a strap-on, coming home and telling me about it as we had sex.