How can I trust my boyfriend when he cheated with me?

I've liked this guy that I worked with for a year now but he always had a girlfriend. And we always flrited and stuff like that even though he had a girlfriend. We even made out in the freeze where we worked. (while he still had this girlfriend) Him and his girlfriend broke up about a month ago and me and him started going out last week and im really really happy and so is he but im afriad that hes going to do find another girl and flirt with her and make out with her, like he did to me when he had a girl friend. so do I talk to him about this cause its really bugging me or do I trust him and let it go?

Well, chances are if he did it to his last girlfriend, he'll most likely do it to you. If I were you, I would take things nice and slow. That means not getting too physical with him too fast. It might just save you some heartache in case something does happen.

I totally agree with the above advice. If he cheated on his last girlfriend, he's likely to cheat on you too. But, then again, just because he did, doesn't mean he will again. Its complicated. I agree that you should take it slowly and see how things go. Try not to get too attached too early, because if he does cheat it will make it much harder for you when it happens. I'm not sure how close you are, but if you feel he will understand when you tell him how you feel, then do. If you're not sure, wait a bit and see how things go.