My boyfriend read my diary.

I have this diary/journal type thing that I've been keeping for about a year, I write about really personal things in it. I couldn't find it for a while, but I figured I'd just misplaced it. Tonight, I was hanging out with my boyfriend at his house, and I saw it on his nightstand! I was so mad, I asked him about it but he didn't give me an answer besides "sorry". I really just want to cry, we're been going out for 7 months, and I never thought he'd do something like that. I'm kindof embarassed as to what he might have read, because I wrote a lot about him. What should I do?

I'm 16 and he's 17, if that helps.
My boyfriend read my diary.
Post Opinion