So, I've posted here multiple times and haven't found exactly what I'm looking for, so the search continues. I've ruled out the following movies:

Disturbing Behavior

Jennifer's Body

The Urban Legends Series

The Howling Series

Blair Witch Project 2

Jason Goes To Hell

Witch Board

Idle Hands

As well as anything else after like, 2002, I'd wager.

I remember like, one scene from this movie. It's like, a paranormal/possession movie. This guy is at a party (maybe a rave) and making out with a chick by a bonfire. She's calling him all kinds of pet names like "baby" and "boy", then he suddenly becomes possessed and either strangles her or snaps her neck, then just throws her down and walks off.

I the guy was a white dude (possibly with buzzed hair) and the chick was a white, blonde or brunette haired girl.

Gotta be a late 90s movie. Possibly early, early 2000s.