Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Please read fully before answering 

So there's this woman we both know, she's actually a co worker. My brother visits work quite often so she got to know her. He got her number and they've been talking. 

She's quite beautiful and I was also interested in her but I'm too shy. We've had conversations but I wouldn't say we're friends or anything like that. 

Anyway, it turns out she just wants to be friends with him, or atleast that's what my brother told me. He said he tried but it was obvious she wasn't interested. Oh well.

A few days later I find out by another co worker that she's actually into me (she even told her that she was frustrated that my brother talked to her instead of me) which is a huuuge surprise. I'm not too popular with the ladies if my username didn't make that obvious so I really want to jump at this chance but my brother isn't just a family member, he's one of my best friends and I wouldn't want to hurt him. He made it pretty clear that nothing was gonna happen between them but I feel like maybe that's because of me. WIBTA ? 

sleeping with a woman my brother is interested in, even if she doesn't reciprocate those feelings