caught boyfriend talking to girls on facebook...?

[Mary]

So a few months ago my boyfriend got on my computer and hacked into my google calendar and set up notifications so that it would send me emails telling me that he loved me and such. So I started getting these notifications and I asked him if he knew my password, I didn't care I just wanted to make sure my security was good. He said how he didn't and he didn't want them. But, he told me his passwords and said how I was more then welcome to go on any of them anytime. I never went on any of them till last night when I was bored.

I found these messages that he had sent to multiple girls like back in February 2011. We were exclusively dating then and have been for the last couple years. But, in these messages he was inviting people go to basketball games with him. He also asked one girl to be his valentine.... It really bothers me. But, it was a long time ago. Should I bring it up? I don't think he has done anything else...but I feel like it's kind of a deal breaker. I don't need to put up with it. But, at the same time it was so long ago.

Any advice. Thoughts. Feelings. I would appreciate it.

Thanks!