I don't want to be hurt again

I have been in relationships that destroyd me two times, and now Im sceard to have one. The first guy raped me and laught at me when I was hurt and the other one left me when I needed him the most and tried to make my life a hell afterwards. Now there is this guy that seams to like me and I like him a lot to, but Im to sceard to actually try start something. The other guys was nice in the beginning to and I dont think I can handel anything like that one more time. I really dont know what to do... The guy I like now is like a dream. He even gave me a rose one time he came to wisit me, and there was no reason for it. I cant think about it anymore, I just get more unsure. But I do love him. What shall I do?