Cheating

Me and my fiancé have been together a little over two years. And a few months ago I found out he had cheated on me twice throughout these two years. I know two wrongs don't make a right but I had a couple conversations with an old guy friend and some pictures were exchanged. My fiancé found out about the pictures and says that he would have rather me had sex with the guy because now he has pictures of me. I told him I feel like it's worse for me because he actually gave someone something that is supposed to be mine. They got to feel something that only I am supposed to feel. Atleast what I did was the whole "you can look , but can't touch" scenario. Opinions?? Pleaseee!!