Need advice, I will answer back to your questions.

Okay so don't make fun of me for this, but I have my girlfriends passwords to every app she has right? And I rarely check them at all, so yesterday I decided to check her ask.fm right? And I look at all the questions she's asked in the past, and I know it's the past, but she's told guys she had crushes on them and what not, I mean I shouldn't be worried cause it's the past, and we've been together 7 months, help me not be jealous?

Well if she knew you would be seeing this confronting her about it would be the best option. If you violated her privacy coax her into it. Let her known personally your gona check for whatever reason. If she panics ask why. Sorry I couldnt offer more help