Why Can’t I Stop Loving This Man?

I'm in love with a man who hurt me deeply once before. I recently got back in contact with him, but I haven't told anyone about it. I think I'm ashamed of loving him again and I don't want to hear everyone else's negative comments about him. I also fear he will do the same thing he did once before which makes me want to keep him to myself. Not sure what I should do. Help!