Help major heartbreak/guy problem!?

I have been with this guy for about half a year it has been an on and off relationship and it is killing me mentally! I broke up with him 2 days ago and its killing me my heart hurts and I cry all the time I cant watch a romance movie with out yelling lier at the guy who is saying that he loves the girl. I am not going back to my ex cause when we date and he ends it I am worse than what I am now. When I was with him I did some things that I really wish I didnt do now all the guys want me cause they think I will be " easy" and thats not what I want. I wanted an honest relationship but now my life is ruined. all my friends think I am a slut and the guys arent helping. I do not know what to do at all! how do I get rid of the reputation that I have now and how do I get over that guy!!!!!!!!! Please help I dont want to be crying and upset all summer!