It's fucking weird and creepy, and it's sexual harassment.
That it may be, but it’s not rape.
You must not know what "rape culture" means. It doesn't mean just rape, but an environment in which misogyny and violence against women is normalized / celebrated / defended.
"Rape culture" refers to a broader set of cultural norms and systems than just the literal act of forced sex.
Rape culture doesn't mean that everything is rape. It means that our culture routinely sexualizes women and downplays harassment towards them, which, in turn, emboldens rapists.