<human>: I had a pretty big problem with a girl awhile ago. She was an exchange student and I got to know her pretty well at the start of the school year, enough so that I started hanging out with her a lot.

I fell for her, but she had a boyfriend back home, so I kept my feelings to myself in order to preserve what we had. She ended up hanging out around a complete douche instead and always acted flirty towards him, and I ended up feeling like I took up no space in her thoughts.

I asked here for advice on it, and the general consensus was that I should just cut off ties and not hang around her, and I also thought that it was the best route to take.

I tried doing just that. I go to a pretty small school, so it's not like I can just break off all ties with her, but I don't talk to her unless she talks to me, don't text her, etc...

The only time she would talk or text me was if she needed help with something, which just furthered my belief that she only seemed to hang around me for favors, and she didn't truly see me as someone she wanted to be around.

Well, now she realized that the guy she did hang around all the time was a complete douche and she straight up cut ties with him.
Instead of trying to make up with me, like I figured she would, she has instead gone on to act the exact same way with another guy that she had previously treated like me.

Granted, she has tried being friendly towards me, now, but at the same time, she is usually asking for help.

And now I feel just as bad as I did before. Maybe it's because I thought she would try being around me, but instead she is acting all flirty with another guy.

I still care deeply for her, and rationally, the way she treats me, it would make sense that I shouldn't and wouldn't want to be around her, but I cannot get her out of my head.

What should I do?

Can you condense the text into three sentences or less?
<bot>: The girl that I like stopped hanging around a guy I hated, but instead of trying to be around me, she still doesn't care and hangs around other guys.