I do think I need to tell him what I did. Yeah, it was bad, but I don't think it's some blasphemous act, especially given the fact that he used a password that he's used for something else before and TOLD what the password was. It's not like I sat there guessing until I got it right or hacked his account. And, after all, if I hadn't guessed his password right, I'd be blissfully unaware and he could be hooking up with people without me being any the wiser. I think I'd rather know than be ignorant. If I hadn't known this, I would have went right on with our relationship, and if things continued to be alright, we most likely would get married within a couple of years. I can't help but think... What if we got married and he really went through with hooking up with a guy? Or another girl. I keep focusing on the whole guy thing because it's really disturbing to me, but he could meet women, too. And I'd probably never know because he's such a smooth operator.

I'm not really looking to fix the relationship at this point, so if he blows up and gets mad when I confront him, then he'll just have to be mad. I love him and care about him despite what I've found, but God... I can't live with this. I doubt I could ever catch him doing anything IRL, so I guess the only choice is to tell him everything. Once I figure out how to do it, anyway...

Thanks for all the advice and well-wishing, guys. I appreciate it.