How to tell a boy I want to be with him?

I have been talking to this boy and him and I want to go out but I dont know if I should beccause he has a past of cheating, but him and I have so much in common I dont know if I should give him a chance. what should I do???

talk 2 him and tell him what you've heard about him in the past tell him that you might give him a chance if he proves 2 you that he has really changed

run up and say I want you in me?

Well, some people change. He may not be one of those people, but you never know until you give him a chance!