I found myself having one-itis thoughts today.

The girl: A mutual friend. She is roommates with a male friend/coworker of mine. She is in a long distance relationship.

History: Met this girl on my friends birthday a few months ago. Danced and made out with her at the club we were at the night I met her. Found out she had a boyfriend the day after.

I see her once in a while when I hang out at my friends place. I am still attracted to her, but I don't want to pursue her because of her relationship status and don't want my friend to think I'm sleezy.

Today: We had an event with our group of friends and I got a lot of IOIs from her. She kept saying we should do activities together in the future, and asked what I was doing after our event hoping I would ask her to hang out. I resisted that urge and we just parted ways after the event. She later called me and I got hopeful that she was going to ask me to hang out (one-itis) but she said she called by accident (doubtful).

After thoughts: I kept trying to come up with ways to see her again or contact her (one-itis thoughts). On the other hand I want to work on self-improvement and don't want to waste time on this girl. I want to be the prize so if she wants to pursue me, thats fine, but I won't actively pursue her.

Advice on the situation? Should I go for her anyway despite her relationship status and living situation?