Just yesterday my girlfriend Sara, invited her friend over, Carlos, a 16 year old guy who was bi, she told me that he heard how great I was and if I could do a favor for him, because he was really down. I wasn't very pleased because I'm straight but she said it would be okay. He came in the room and and pulled down his pants, and his cock was hard all ready he began to take off my pants and boxers. Sara was sitting and watching. He took off his shirt and then mine. He then pushed me on the bed and began to suck my dick. It felt soooo good. He had done it before. He licked my dick and after 5 minutes he told me to cum in his mouth so I did, and he swallowed. Then Sara walked over and started making out with me she was so pretty, then her friend Carlos ran over into the restroom and got some lubricant that Sara had bought for us, he told me to spread over his anus,,, and he wanted me to fuck him hard, I hesitated and made a face to Sara saying no, but she whispered into my ear that she would repay me, so he bent over and I slipped my dick in his ass and he moaned, I began humping he faster and faster as he told me to, after 10 minutes I told him I was gonna cum and he said he wanted me to cum in him, I said okay and I burst all into his ass. He loved it and turned around and licked the last of my cum of my dick, he went out the room and put his clothes on and left. All this time Sara was sitting there in the chair watching excitedly, I stood there in front of the bed when she came upstairs after saying good bye to Carlos, and she closed the door, as I stood there nude, still wondering what happened she, said' Thanks, now Its my turn to do you a favor.' She is quite a wonderful girl lets say. And what happened, is a whole another story.