Boyfriend got into my email....oh shhhh!?

I guess i forgot to log out my email account on his laptop but he was able to pull up my email and looked through them all. I admit that i was flirting a little and some guys have sent some pics but i NEVER had with anybody. Matter of fact, I never even seen them in person. Now he is very mad since I have been on his case about female friends he have. Btw, he cheated on me about 60% of the time we were together whereas I haven't. How do I repair the relationship after this? I know I would be mad if I found it on his email or something but it's nothing like that, just internet fun.