Sexually abused.. Does it haunt you forever?

Being sexually abused by 3 men at different stages in my life-during childhood & adulthood. After 3 years I've finally found a guy who respects me so much. We've been together for a year now and all we've done is kiss. I know i want to have sex with him but I am afraid of feeling cheap, depressed/crying after because of my past. He doesn't know my story, he just thinks I'm a respectful lady and loves me for it. Will I ever forget my past?? I just want to be happy.