Major boyfriend issues, not sure what to do?

Honestly..I would be scared too. I mean,you've been going out for a LONG time,if you trust him let it go and just go where ever you need to. If he cheats,he wasn't as good as you thought he was. You never know what he would do. I don't personally know that guy so i can't judge or predict what he'd do. Just try talking to him in person before you leave,not over a text. Also..talk to the girl.