Should I change....? What should I do about him?

Omg! I am so sorry for what happened to you, all those guys are d***s and you deserve better but not all guys are like that, like the guy that you like - you say that you don't think he would hurt you - well then go out with him :) No your not a player, you can't chage the way you feel. Tell the guy what happened to you and he will understand and won't hurt you, just try to trust the guy but if he is a d*** then break it off. Good luck!