What does it mean when a guy says "He's a bad person?" 10 points?

Ok, I was talking to one of my male cousin who is REALLY REALLY close friend with my bf. And he had said that my bf has been done wrong by many girls in the past, so he does them wrong. He has been with many women and still have not found the one. My male cousin also told me that his mother also did not raise him bu my cousin's mother. He told me that my bf told him once that he isn't a good person. Anyways, I tried to break it off with my bf 2wice because I wasnt sure if I liked him as a bf but more of close friend. He'd say he wouldn't know what to do if i talked to him without him wanting to kiss me, and the otehr time when ni tried to breka it off he got nervous and asked em if I didnt liek his kiss so he kissed me but we just ended up reconciling. My 1st bf ever... Then one time he did break up with me because of these rumors and then we came back together and he told me you should know I'm a good person because your parents has talked to my parents and they said I was good and that everyone knows im good... confuse