Though it was NYE last night, I found out my boyfriend was cheating. There was a girl that I haven't seen for a while and I told her that he and I were together. She replied to me that she had already known that he and I were together. I asked her how she knew and she told me that her best friend and my boyfriend were still talking. My boyfriend and I had talked about this girl in the past. He said that he does not know how she had caught feelings for him however it came out later that they had had sex with each other. We talked about it and everything was fine. But then one day I got home from work early and I seen her dropping him off at my house. He really didn't act like it was a big deal he said that she had seen him Walking and she had just picked him up. I did not believe him this time so I always had it in the back of my mind that they were still hanging out even though he said that he did not talk to her anymore. So a few months ago by and last night happened. Her best friend told me that he had told her that he wanted to be with both of us he told her that I was OK with it. I did not believe it at first so I contacted the girl to see what was really going on. She sent me messages of him saying that he missed her and he asked if she still loved him. But he had told me that they only had sex two times and that it was never anything more than that. So I asked him why would you ask her if she was still in love with you? We argued and argued and he cried for a while and eventually I got so mad that I cannot stop eating I felt really bad after the fact but I was in my emotions at the time I put him out. His stuff is still in my backyard he said that he's going to come in the morning to get it but right now it's almost 2 o'clock in the afternoon. I'm really worried about him because I don't know where he is or how he's doing he has no phone or anything. I feel bad but at the same time he's a cheater and a liar so I don't know what to do.