I need relationship advice.?

[Meow]

I don't really have anyone to turn to other than strangers.
My boyfriend is my world. I am not going to sit here and explain how perfect he is, but we have been together a long time, never had a fight, he's treated me like a princess since day one, nothing less.
I have known his Facebook password since the first week we met, I never went on it. I was afraid of what I would see. I trust him now though. So the other day I needed to go on his account to fix a privacy setting for him, and his chat came up. It was a conversation between him and a girl he used to have a thing with, he was sending her hearts, saying he wished he went to her party, saying they should catch up soon and that he misses her.
This encouraged me to look at more of his messages. His inbox was full of girls. One saying he would love to teach her how to play guitar. Another asking for texts, another saying they need to hang out. Sending a few hearts. And that just bothers me.
I feel as though he talks to them more. Me and him see each other everyday but he doesn't always text me that much.
And other than that, he always promises to spend his days with me when he has them off work or if he isn't busy on the weekend but he constantly breaks his promises to go out to parties without me. Even though he says he would be with me all the time if he could and would rather be with me than anyone else, he still goes out.
He is always tagged in other girls photos... getting drunk and standing close.
Half an hour ago he was tagged in 2 group photos, with a girl he used to talk to bending down in front of him, with her ass in her crotch.
SHOULD I BE WORRIED? JEALOUSY IS SLOWLY KILLING ME. I know he would never cheat. It takes allot for me to trust someone due to my past, and I have finally trusted him.
And I can't really confront him, because he may think bad of me for going through his messages. please help I don't know what to do, i am upset all the time.
Just thought I would add, I am not breaking up with him.
I just need advice, some comfort. Someone to tell me how to deal and tell me what I should do. <3 Thankyou all.
I just asked him if he still talks to girls he used to talk to since he has had me. He said "not overly, I still talk to them as often as I can" BAD OR GOOD? I feel like saying not to but I don't want to seem controlling :'( I just can't stand the jealousy now. He is mine

[Wolf Hailey]

All he wants is ur pussy so break up wit him

[Pieman]

Depending on his motives, yes, you should. But it's possible he has nothing do with the fact, he's always tagged by girls. You should talk to him, about it. But the last two times I had a gf, she and I never had a fight (except at the end, with the one before the last one) and the relationship didn't last. I understand your reasons for not confronting him, but you really should! But listen to what he says, and remember it. That way, if it turns out you're mistaken about what is upsetting you, you can gradually stop being bothered by it.

[Sheuly]

You try to understood the reality and talk a lot with own.