Does she like me even with all this other stuff?

First off she has a boyfriend (Yes i know it's a bad idea to talk to girls who have them but i'm not after her) so alot of the stuff she does just gives me weird feelings like it shouldn't. First off is the amount I hang out with her compared to her and him, it's 3-4 times a week for me and her while with him it's once every week or two, Then sometimes when they're hanging out she'll text me the whole time and say stuff like "I wish i would have just hung out with you instead". Then there's alot of play fighting and hugs between us, the other night it was late and she was laying down in the passenger seat and smiled at me and said thanks for everything. The last thing she does is with what she says to me, just stuff about what she likes about me and being her favorite person