AIO bestie of 3 yrs went against my wishes and past my boundaries..

We've been bestfriends for like 3 yrs now.

I (22m) told my bff (20f) to not bring her boyfriend over to my house (apartment).

The boyfriend is like fboy material, and would sleep with basically anyone if given the chance.

My bff (maybe was bff) doesnt have her own place yet, and only comes over occasionally. But ive told her every now and then that if she ever needs a place to crash, my place is always open.

So fastforward to tonight, she came over to do some makeup cuz she left her stuff here, and i was getting ready for my date as well. All was fine until 5min before i was supposed to bring her home.. That her boyfriend was gonna come TO MY ADDRESS. like my area.

This made me begin to get a little anxious because rumor has it that this boyfriend is PSYCHO. Like he stalks and follows you AND your social media sorta shit. I along w some mutuals have warned her countless times but she still.. Is with him. Her choice who cares, idgaf shes still my fav person and i love her regardless.

Anyways.. She says "oh ill just go across the street".

NOPE.

He comes, and then FOLLOWS her back to my place because she "forgot" something.

Im beginning to think of myself as an awful friend, because i had a tiny inkling that she'd use MY place for her little..."date night". Because i was supposed to leave for my date after dropping her off at her place.

Reason why im thinking this is because she sort of told him she has her own place. WHICH IS THEN MY PLACE CUS I LET HER STAY HERE! WHY ELSE WOULD HE COME TO THIS ADDRESS?

If ya wanna get freaky... Do it in your own place, not your friends, not your bffs... Maybe in your parents room since its always funny. (jk)

And im also thinking this because i told her I'd be leaving for my date 10min after her.

Welp 10min happens and oh wow... Funny meeting YOU here...?

Anyways... Im REALLY concerned now, both for her, and myself!!

Thank you for those who are reading this. And if you have any advice whatsoever... Please.. Im all ears.

I wish I could rescue her from this douchebag but... Well... Not my position to do so... Since all my efforts kept getting turned down. Which wouldnt that mean that she liked him? So why would she need rescuing? What is this paradox?

Also should i cut her off? I trusted her and she still went against my wishes AND WENT

over this boundary! Shes my bestie but idt we're besties because... This is something you would NOT do to your bestie! Holy shit would. You ever want your bestie to find you with another person IN THEIR BED?? Maybe in a porno...

Im really just disappointed and actually really really hurt that she did that. How do i even digest all of this?? Am i overreacting?