Why did my boyfriend do this?

Reverse it, what if he had been checking your emails, what would you do? If it were me, I want to change the password because I have no way of knowing what messages may come. What if I were to get an email from an old school mate, saying that she was single and was wondering if was interested? Even though I may not have any contacts imagine the fall out if a third party was reading the my mail which was intended only for me.

At issue here is trust. Do you trust him or not? If you do then what are you worried about? Something tells me you don't for whatever reason (perhaps he earned that?). If you do trust him them forget prying into his private areas. Everybody deserves at least some bit of privacy, this does not mean they are going to use it to cheat.

He did it because you were looking through his email. What's so hard to understand?

It doesn't necessarily mean he's hiding anything. How long were you doing this and found NOTHING? It means he doesn't want you snooping around his email. You need to learn that in a relationship you are together, but you still need separate lives too.

no, but its a very subtle way for him to tell you to stop being so controlling. that's like psycho and un-necessary. don't you watch entourage? ashley wanted to check eric's emails and he broke up with her for it. I think I'd do the same. how about having a little trust? a lot goes through emails, bank statements, stuff with social security numbers, bank account numbers, etc.. what if you have personal stuff on him when you break up? just see where he's coming from, he changed his password and doesn't want to fight with you, because he has nothing to hide. its just intrusive.

Maybe, because he never does that for you, DUH! Trust me, if there was anything for him to hide, he wouldn't stick around for you to find out! He'd leave you, you're not married! But, it made him uncomfortable that you check it!

I think you have to be trusting of him for this to work. this sounds really unhealthy. either you don't trust him for a reason, or you are paranoid. either way, something's got to give sweetie!

I do think its messed up you are snooping through his emails. Its a totaly invasion of privacy. And in the end, you'll find yourself so wrapped up in his emails and thinking of shouldda wouldda couldda and what if's you will be crazy! Leave this man alone, you would be so p*ssed if he was reading your emails or worse, your texts, diary, notes, etc. P.S. Maybe he's trying to tell you "stay out of my stuff" without actually having to say it out loud. give it a rest, and love your boyfriend stop acting like a 12 year old.