There have been many times I have believes my boyfriend was cheating. I read Fb messages, seen texts, the whole 9 yards. He says they talked but he never truly cheated and that if he wanted another girl he would just leave me. I know it's not my fault, but my self esteem has dwindled to nothing since these accusations. I hate who I am and I feel like we can't discuss these girls cause he gets mad. His best friend told me he create on me and it always turns into why don't you believe me after 4 years. Most recently a girl messaged me saying they were hanging out. What do I do? Who do I believe?