I've been hooking up with this girl technically since high school (5+ years ago for me) but it's only been recently that we started to hangout more consistently as I'm temporarily back in my hometown. She was living about 45 min from me and I'd visit for a night every weekend over the past month. However, she's just moved back to my hometown again as she waits until her new lease starts and we hang out like once a week. Sex is good. Company is good. Most things are good. Except...

....she is a major flirt when we go out or has any drinks at all. For example, she has invited guys back to her place when I'm staying over and has almost left to another dudes crib entirely. She will also get to a bar/club and dance on other dudes all night. Idk her reasoning behind this (just really flirty, tryna make me jealous, etc) but I always keep my frame and act as if I came alone.

Two nights ago I had my brother and my friend pick me and my plate up from the bar for after-bar festivities. The plate was hella flirty with my friend (as she always is) and they traded snapchats right in front of me. I was a little pissed about it but kept my frame until she left the next day and yes, I made sure to fuck her several times that night.

This is outta the norm for me but I've noticed myself being a lil jealous at her antics while we're out and the situation with my friend put me at the point where I'm considering hard nexting her. I have no intent of keeping her around as anything but a plate so I usually ignore her "I got X guys number today" comments or advances on other guys when we're together, etc.

She texted me last night "thanks for such a surprisingly fun night last night" (our hometown is pretty shitty) to which I didn't reply. Idk if I'm going to keep seeing her at all because, although her and I are on the same page expectation wise, it still kind of fucks me up when she's literally tryna fuck other guys the night I'm with her and disrespecting me by giving my friend her SC in front of me.

I guess it's worth noting that she had overbearing parents up until she moved out for college who didn't let her do shit in HS. She also just recently got out of a 3+ year relationship (that she cheated on her bf with me in) and lost her mom who was really close to her. Maybe she's just hit that "experimentation" stage these girls go through which would reflect her behavior.

Anyway, what would y'all do? How would you respond/interpret?

Edit: I'm not the best storyteller so if you need more context or whatever lmk.