My ex girlfriend always had a fantasy to see me have sex with another man. I refused for months until eventually we were having problems with our relationship and I was desperate to keep her. So I agreed and she brought home a 'friend' one night. She dressed up in her sexy lack lingerie and we got down to it. First she said she wanted me to suck his cock so I did. It felt gross but I did it for her. We stopped before he came and then she said she wanted to she him take my ass. So I bent over the bed and took cock for the first time. She was smiling the whole time and telling me I was a pussy, gay, sissy, homo etc. When he was ready to cum he pulled out walked around and shot his cum on my face. My girlfriend just laughed and told me our relationship was over. It turned out she had been having sex with him for over a month and he was her new boyfriend.