<human>: Summarize the given text in a few sentences.

Alright, so I have been talking to this girl (lets name her Claire). Claire and I started talking recently, and we got along very well at first. The first few days we talked all the time, and we would do everything together. But after a few days I found out she had a boyfriend. I never really bothered to ask or to even think about it, because she seemed to be coming on to me pretty strong. So I was pretty upset by this, nonetheless we continued to talk everyday. 

We started to develop feelings for each other and we both admitted it. She never really talks to her boyfriend all that much, and he's busy all the time. But Claire still also has feelings for her boyfriend, they have been together a few years. She says she is scared of me leaving her life, and she always claims it's her fault for everything. For continuing to talk to me and develop feelings for me after she told me she was already dating another guy. But I don't want to play the waiting game any longer. I don't want to be the guy that fills voids in her relationship. I want her to be with me, but I don't know if that's possible or not. We do and act like a couple, we even argue like we are dating, but over that situation. So I would like some advice Reddit! Can I get this girl? Should I leave and see if she follows? Or what else? I feel bad for being in this homewrecker position, but I also feel like we should definitely be together. Thanks for reading.
<bot>: Got led on by this girl, found out she had a boyfriend. We both developed feelings for one another, and I can't decide what I should do. Help please.