Advice anyone?

So my boyfriend works in an office so there are both men & women. Totally fine by me I also work in a similar setting however.. when my boyfriend started as a regular staff member there was a girl around our age there she would text him after hours about work gossip & cry to him when the one boss wasn't treating her well. She even confided in him about the one boss supposedly texting her to hang out and stuff.. fast forward she quits makes a big scene saying she is leaving & that she could sue them for the one partner texting her to hang out, this & that. Meanwhile now my bf is higher up than her & her mom that works there also begged to let her come back to work so the owners allowed.. now she's back and she is still texting my boyfriend about none work related things as she did the whole time she wasn't working with him. She's always greeting him with hugs and asking to go to lunch.. I think it's very inappropriate for them to be close especially since she caused such a scene about the other boss texting her.. am I crazy or does anyone understand where I'm coming from ?🤔