Watching My Girl Jerk a Guy Off

When I was in university my girlfriend used to live in a house with three other people. One couple and one guy. She was a kinky little thing, maybe 5 foot if that. Her upper body was quite slender, but she did have very thick stocky legs and fat little feet and hands. Her face was nice and round and she had big eyes, she was of Indian decent. We were going out for a while, and having a lot of sex, when I noticed that her single male roommate was getting a bit aggressive with me. I asked my girlfriend what that was all about and she said that he obviously was jealous that I got to fuck her and he didn't. I suggested that she should just give him a handjob, but while I was fucking her. My gf thought that was a good idea. So she went into his room wearing nothing but a bathrobe and made our suggestion. He declined but when she took of her robe and he could see her naked body he could no longer resist. We all got naked, him and me were already hard before our clothes were of. My gf lubed both of us with cinnamon lube. She really like a well lubed dick, something about the way it shines made her hot. I started to fuck her doggy style as she proceeded to jerk the guy off. She started to give him head too, which we did not agree on, but it made me so horny I did not complain. While she was stroking him she would occasionally stop and take my dick out of her and stroke me a little before putting me back inside her. I figured she did this to let me know that she was mostly turned on by me. She later admitted that she did do that to see and feel my dick, which was quite a bit bigger than the other guy's. My gf confessed that it turned her on that a bigger dick was inside her while she was jerking off this guy. After a (short) while I really felt I was about to cum. My gf was jerking the guy quite hard, but he was nowhere near cumming yet. I decided to lick my gf pussy from behind for a while to keep her going and cool myself off a little bit. She did not have to change the doggy style position, I just put my face right in there. The roommate still did not cum, and I felt I was getting a little bit softer. I knew that stimulating my dick would lead to an orgasm so I decided to lick my gf's feet for a while. Since she was still jerking along in doggystyle position I licked her soles. She asked me to put me fingers in her pussy, so I complied and rubbed along. Her feet got me very hard again and my dick was in contact with my thighs, which almost made me cum too. Finally the guy blew his load, and my girlfriend turned over. She started rubbing herself while I licked her toes. She knew I was not going to last long so she was basically working into an orgasm, but she did want me to finish inside her while she had her orgasm. She pulled her knees towards her shoulders and spread her legs. Then she grabbed my dick with one hand and continued rubbing with the other. She was cumming and the look of her cumming really turned me on. She pushed my dick into her vagina and while my dickhead touched her vagina I started to cum. I was so wet and warm and I just slid in there. I just pushed my hips forward and came. Since I basically came because of her hands I guess it is still a handjob, and a very hot one. I pulled out and kissed my girlfriend, as I looked up the roommate was stroking. My gf spread her legs to give him a good view, my sperm started to flow out of her. We let him finish, which took forever again.