<human>: I'm 22/F, my boyfriend is 34. We were together for a year when we broke up, and it's been little over a month since we got back together.

My boyfriend broke my trust a while ago when I found out he had a crush on a girl. He said they weren't feelings, just a crush, and that he loves me. 

This girl had been hitting on him for a while even though she knew he was on a relationship, and he didn't encourage but never stopped her either - an ego thing, I guess - and eventually he had his mind on her. What would stop him from taking that to the next level, or repeating it with someone else? Some time after that we broke up, as I couldn't handle the insecurity. 

A few months after that, they started dating, and a few months after that he contacted me and told me he missed me so much, and loved me, and I missed him too and we got back together. 

He now says he's 100% sure I'm the one, that he was going through some problems accepting that I was the perfect girl for him and that the search was over but now he understands himself and is ready to be the boyfriend I deserve. 

But when I found out about the crush, I was devastated, and I could physically feel my trust on him (and other men) crumble. This was the sweetest guy I knew, and yet he betrayed my feelings like that, and never told me; I was left to find out by myself. I like where we're at now, but I don't see myself trusting him again.

My question is, has anyone here been through something similar and recuperated? Can trust be regained?

Can you provide a brief overview of the text?
<bot>: Boyfriend had a crush on the side for almost a month, never told me about it, I found out and we broke up; got back together and are in love but I don't trust him. Can trust be regained?