WMG / Abduction

Karen is on her period.
Two teenagers, stressful day, finally alone, start to make out then: "We should eat first!" Riiiiiight.

Nathan was killed during that stunt with the car in the beginning of the movie.
The rest of the movie is his Dying Dream.
http://tvtropes.org/pmwiki/pmwiki.php/WMG/Abduction