<human>: From reading the title you probably already have an answer ready, but there are some complications. 

This girl and I live in the same hallway of the same dorm. She's in her first year Biology, and I'm in my second year, so we have a lot to talk about. We get along great. After 3 months of this, I'm now hopelessly in love. The thing is, she's had a boyfriend for about a year and a half, and they've been good friends for at least a few years before that. Every time she mentions him, it's a punch to the gut for me. 

I feel awful all the time. I would be okay with telling her and getting shot down so I could cut her out of my life, but that's out of the question since we live 30 feet apart and I see her all the time. On the other hand, as long as I don't tell her, I feel awful watching her be happy with this guy, while she doesn't know I'm dying inside. The only thing I can hope for is that they break up, but it seems like they're rock solid.

For the record, I have nothing against her boyfriend. I've met him, and he's a decent guy. I'm just head over heels in love with his girlfriend, unlike anything I've ever felt.

This might be a lot more tame and childish than some of the things on this subreddit, but I just want someone's opinion (although I have an idea of what the response might be). Either way, it felt good to type this out.

Can you give me a shortened version of the text?
<bot>: Am in love with a girl who's in a relationship, feel like shit as long as I don't tell her, can't tell her because she would shoot me down and I would still run in to her all the time.