Is It my Fault or is He CRAZY!?

Well i was talking to this guy J.P. at first he seem so sweet told me he was looking for love and a serious relationship and everything seem like the best guy ever until he started acting so insecure like he would never trust me he had problems with girls in the past but he got mad because i had alot of guy friends in my phone...now i wasnt trying to get with these guys but they were my friends from school i went to alot of school so i know alot of people.But he would always check my phone and would get mad and upset if i commented on there facebook pic...i would say sum like looove ur pic it looks nice and he would blow up and we argued everyday so i left him and he started threatening me and everything that i had to call the police so was i wrong with all the guys or is he just crazy!!