There is much, but little that I remember about this movie I’m looking for.
The opening scene is a pair of teenagers making out heavily in a car. Them, and a few others are going to an abandoned house for a weekend. A pair of thieves show up, too and steal a ring from a grave in the nearby graveyard. Near the beginning, when everyone arrives, there’s a sex scene, up until vampires and undead start showing up. The guy in the make-out pair was thought to be dead, but was unconscious, and before all is said and done, most of those kids die and some turn undead…as well as a sex scene between a turned teenager and his girl human. The only way they think to save themselves is to return the ring to the head vampire.
I saw this on DVD in 2003. I can’t remember the name.
Hope this helps.