So after almost 4 years my bf and I decided it just wasn't working out and he moved back home to California. We had been having lots of problems for almost 6 months prior to the split. During this time I had been confiding in a friend of the opposite sex. He was really supportive and understanding of my situation and was giving me lots of good advice on how to fix my situation and how to try to work things out with my bf. I ended up developing a crush on this friend but never acted on it because I was still in a relationship. We talked for a couple of months and I had decided that I just couldn't continue in my relationship, I was unhappy and getting worse by the day. I ended up sleeping with this friend (which yes I know was wrong of me to do.) and am still seeing him to this day. Well my now ex found out that we are seeing each other and are sleeping together and has since resorted to sending me messages via Facebook saying what a (excuse the language) **** I am and how he hates me. He said that he wishes he never met me and that he wasted 4 years of his life on a selfish, self centered b@*^$. I responded to him without retaliation and simply told him I was sorry he felt hurt and betrayed and that I will always love him and that someday I hope he can mature past the childish name calling and forgive me. He got back to me calling me more names yet again and how karma is going to come back for me. He said that he is going to get tested and if he has anything he is going to blame me. I just don't understand the need for any of it. It really hurt reading all he had to say to me.