There’s this girl who keeps posting petty, slick stuff about me and the guy I’m dating... what do I do?

So I’ve been seeing this guy for about 3 months and it’s not official because I left for the summer and we want to decide our title when I get back, anyways there’s this girl that has a thing for him that he tutored that keeps posting stuff on her sc story that’s directed at me. I posted him for MCM and she posted “MCM but that’s not even her man, ok sis🤣” and tons of other stuff about how she could post some stuff from her camera roll but she didn’t want to “hurt somebody daughter 😇🖕🏽” how should I handle this?