<human>: I've been having trouble with my(f18) boyfriend (m19) recently. 

We're doing LDR for about 7 months now at schools in different states. 

The long and short of it is that I love him, but there's been strain having to travel to see him all the time, and being able to actually make time when I'm with friends or busy with work. He makes me happy like no one else and I really can see a future with him. 

He did cheat on me once about 2 months back, drunk at a party. We were on the rocks for a while but I'm slowly starting to get over it. 

My problem is this - I have a friend who lives on campus that I hang out with quite a lot, who I recently haven't been able to stop thinking about. I dream about kissing him and having sex with him and it consumes my thoughts day and night.

I don't know how to get him out of my head, and I don't know what this means for me and my boyfriend. I'd never act upon it whilst in a relationship, hell, I don't even know if I'd act upon it I don't think he'd even look at me that way.

God I'm just so confused, I guess I just want to know what people think or if they've got any advice.

Can you summarize the given text in a few sentences?
<bot>: I'm in a relationship but I'm fantasising about another guy constantly, and don't know what this means or how to stop it.