Is it normal that my friend is kinda flirty when she has a boyfirend
So I had this friend for a while who told me she used to like me and I brushed it off because she told me she "used to" so I assumed she was just getting it off her chest. We stayed friends and later she started dating someone else who I've become friends with. Their relationship seemed fine, but she later came up to me and asked if I would date her. I said no, since she had a boyfriend then she asks me if she didn't have a boyfriend then would I date her and I just told her idk. She later started acting wierdly close to me, things that's friends usually don't do? like we would go to a hanuted house together and she paired up with me despite the fact that her boyfriend was there and she held my arm, told me I would be a great boyfriend and started complaining about how she doesn't think her boyfriend loves her, etc. We used to call from midnight to 3AM, talking about random shit like sex and relationships and during that she commented numerous times that she would have dated me if I asked her out earlier, and that she's having thought about cheating.
Obv, I thought all these were some form of signs, but she's still with her boyfriend, and she tells me time to time that she does love him. I'm confused, and idk if shes expecting me to make a move or something but I'm not going to start shit because I know the boyfriend and he doesn't deserve that. Thoughts? Am I reading into it all wrong?