help please 😭

So me & this guy always wanted to talk & have something happen but I always stop it cause about 4 years ago him & my best friend were fwb & idk if she'll mind it? I mean she's talking to someone else but till this day she'll make marks like "he is still the best compare to all the guys I've been with" & it doesn't help that he tells me things like "I want you to be the mom of my kid" help idk what to do.