Name of a kidnapping/hostage movie in the woods where the hostage in a possible cheerleader outfit has sex with the kidnapper?

I saw a bit of this American movie in the late 90s or early millennium where all I can remember is that a kidnapper had some hostages out in the woods next to a campfire. One of the hostages was blonde and appeared to go rogue by dancing or giving out a sexual innuendo to the kidnapper. It appeared that the kidnapper was going to hurt or kill her but they ended up having sex.  I think the kidnapper sang a tune while the hostage was suggesting to have sex. 

Does anyone remember this movie? Thank you very much.