Alright men, need some opinions here. Will try to keep it short.

Long term friend turned FWB. 10+ years. Sex for ~1 month.

She is on a pre-booked holiday with family. Drinking etc (they all drink). During this I feel she is being more distant - less attention from her and less affection, though likely busy somewhat (red flag anyway). Have a few sex dates planned for after her return - I'm considering cutting ties though.

As of tonight, she has gone ghost and where she is it is now late ~1am (red flag #2). NOT normal behaviour of her - probably a dude involved. Though she's likely out with family members. Obviously there's a chance she's out drinking / getting banged / sexual contact with others. Also a chance that she has no contact method (reliant on WiFi which may be unavailable). Hard to tell.

The truth? I've been catching feels and slipping into oneitis territory. She has been catching feelings too as far as I can tell. I haven't shown her neediness though or slipped up.

So yeah, disappointed as an LTR is now out of bounds I think. Had been vetting. I'm also considering cutting all ties now. Drastic, but this is beginning to cost me emotional turmoil due to my attachment - may outweigh the sex in all honesty.

Is it an overreaction on cutting all ties? Or just ending the FWB arrangement?

Also, my logical brain says no, but how could I ask if she banged / kissed someone else? (I know, gay) + she might lie anyway.

I know the classic outcome, abundance etc. etc. working on it big time. I have even been in the gym twice a day recently and am in the best shape in years.

At the very least, I'm going soft next when she initiates contact. Yeah I could hang around for the sex but I'm digging my own grave at this point, emotionally.

Need some real raw opinions here men. Thanks.