First of all, new in this sub. So bear with me, please.

So I and this girl were FWB for a few months. I really liked her and could see future with her. I asked her to be my GF a couple of months ago. Things were good, other than I felt like she is lying to me about some minor stuff like where she was and what she was doing etc. It didn't really bother me that much.

She always prioritizes her friends she has known all her life over me, that's kind of understandable. But last weekend we had an argument about she going to club with her friends on girls night but never agreeing to go out to bars/club with me. She still went to the club and was texting me sporadically from the club. I asked her to come over when it's done, she did and he had sex and all.

Next morning I checked her phone, found out she was texting a guy with very flirty messages she met at the club. Also texted shit about me to her friends, with they calling me baby and all. All while she was sleeping with me in the bed.

I am confused now. This girl is probably not trustworthy. Should I just drop her or keep fucking her while trying to meet other women.