<human>: Can you condense the text into three sentences or less?

My boyfriend and I started to casually see each other during the summer last year. We weren't "serious" but the feelings were there.
He tried to have a conversation with me about becoming more serious but it turned into him accusing me of not giving him enough priority in my life and into a fight. I had no idea it was what he wanted.

The weekend after that fight, he left for another city with his friends just to explore and hang out. He ended up cheating (can I even call it that) on me and lying about it for a week before the guilt took him over.
I didn't speak to him for some time and then decided to give it another chance because everything was very unclear at the time. I still felt extremely betrayed and hurt. This was in October.

In a week, he is going to the same city again for a festival (for 5 days) with his classmates from his program in college. I have told him before that I am worried because of what happened before and he keeps saying he has learned from it and I am stressing out for nothing.

I cannot help but feel like something will happen, or some girl will come up to him and he wouldn't deny her or he will be too intoxicated to stop (he was very very drunk last time). I know that trust is EXTREMELY important, and this is the only problem i've ever had with trusting him. This has not been a constant thought in my head, but now that the date is nearing I can't stop thinking about it. Our relationship right now isn't too great, but we both love each other (he says he loves me at least) and care about each other a lot. 

Is there any way I am just too hung up on this and need to let it go and let him enjoy his couple of days? I don't want to be clingy and keep texting him all the time asking about what he is doing or if anything happened. I'm just afraid of being betrayed again even though he has not given me a reason to not trust him after that one time.
<bot>: Boyfriend going away for a couple of days, can't stop stressing over whether or not he will cheat(?) again and don't know what to really do/how to feel.