<human>: Provide a brief overview of the text.

I saw this girl every day at the beginning of summer, and I'd walk by and we'd just hold each other's gaze. But I just couldn't walk up to her because she was surrounded by her friends. I finally got the chance to start talking to her a few weeks ago and by the time I did she had start seeing this guy a week before. 

He's attractive, and honestly he's probably a good guy. The only thing I really have on him is that I'm in what I'd consider a program with a greater career/financial outlook after graduation, and I'm in better shape than him. I don't want to break them up, I know that wouldnt help anything. But I can't just up and forget about her. She's wonderful. 

I just don't know what I'm supposed to do or how to act with these feelings. When her boyfriend started catching on to how I felt, it got tense. She stopped talking to me as much and she feels guilty when we're alone together or if she talks to me - she hasn't said as much but I can feel it. If I see them together I smile and wave at both of them. Yet I can't bring myself to become friends with him. I know he's a good guy and she likes/loves him, but I really dislike him. He seems to feel the same way about me. He gives me a half-smile/half-glare when he sees me. 

I know it's morally wrong to keep flirting with her, and I hate that I'm doing it when its making her feel guilty. I feel like a demon, how do I deal with this? What I'm supposed to do? Since they haven't been together long I feel like I'm just waiting and hoping in case they break up. Is this wrong? I understand I'm supposed to have like an "affluence" mindset, that there are always other girls. But I have a lot of friends and talk to a lot of girls. And there really just aren't. She is honest to god one in a million.
<bot>: I'm head over boots for a girl with a good boyfriend, I'm the bad guy. How do I deal with these feelings and what should I do?