<human>: Give me the gist of the text in a nutshell

Posted this as a comment to a thread elsewhere earlier today and decided to also post it here, since I'd like some more advice.

I've known the girl in question for two to three weeks now, and I fell in love with her pretty quickly. She's just so perfect (from my point of view) in so many different ways, and we get along really well, and I sometimes have a feeling the "beyond friendship" thing may be mutual. Since I haven't ever been in a relationship up until now, I was very happy to finally having found a possible partner, but then I learned that she is already in a relationship.

That's pretty much it already. My problem is that I have no idea how to proceed. I don't want her to end her current relationship just because of me, obviously, because I'd rather avoid girls that do that. Then again, knowing her, she probably wouldn't ever do it anyway. But what do I do now? Should I tell her, should I not? If she ever breaks up with her current boyfriend, maybe it'll work out. But until then, what do I do?
<bot>: Crushing hard on a girl I've known for ~3 weeks. She's already in a relationship. Don't know how to handle my feelings properly.