Should I tell him I hacked his fb (& what I found)?

I've always been a firm believer in respecting each others privacy in a relationship. I've never went through my boyfriend phone or his Facebook until now. I've been in a relationship with Josh for a year and a half and in a way I feel that he loves me but at the same time I don't understand why he ignores me when we're in public even if he invites me to come along. I haven't been on a date in 6 months and he never buys me anything like most boyfriend do.

Anyway I got to feeling like something wasn't right so I hacked his Facebook. I saw on his msgs where he's msgd about 10 different girls since we got together just random msgs like "do I know you & then they will just start talking about whatever never anything sexual tho. I did see one message from about 6 months ago where he msgd this girl & asked"hey, what's the girls name that you were with yesterday" That one really pissed me off.

So far I haven't told him what I found. I'm really devastated but every one of my guy friends who I've asked for advice says that every guy is a dog. And although he may not be cheating on me that he's gonna be hitting up other girls behind my back .

I guess I have two questions.

(1) Should I just let this go & accept it as something with no harm meant?

(2) Should I tell him that I know this stuff? He's probably gonna be mad that I hacked his Facebook.

I just want to do the smart thing here. Please give me some honest answers!
Should I tell him I hacked his fb (& what I found)?
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