My boyfriend did something disgusting?

[Lenora]

We are together for 6 months I love him,but something happened yesterday. I checked my facebook app and realized it was logged in from his account. Than he recieved a massage from a girl. This girl is his classmate and I've heard people say that they used to have feelings for each other 2 years ago. I don't know why I started reading. He told her that he wants to take a shower with her, that he wants her to sit naked on his legs and he wants to play with her hair while her body is still wet and naked. I couldn't believe it.. I phoned him and asked.. he started crying and told me that it was just a joke.. that he is fucking with her feelings.. but how can I belive that when it wasn't just once.. he told her many times things like that. He said to me today that he wants only me, that he is sorry and would do anything for me, that he was just joking with her cause she likes him. I asked his bff and he told me tthatI don't know many things that can kill me, but he can't tell me. Help me