It was after 1994 it had the song Dream by The Cranberries in it. Some of the plot was about the popular crowd teens of course.. There were a group of friends like 2 or 3 girls and 3 or 4 guys two of the girls were best friends the boyfriend of one of the girls wanted the other girl but she liked someone else and she wouldn't sleep with him because he was her friends boyfriend. So at a party they all had she went out to pee on the side of the house cause the bathroom was full and the guy came out and ended up raping her.. We remember she had a skirt on she had blonde hair the other girl had dark hair. We think she was killed to cover it up but we can't remember. This is about as much as I can remember would appreciate your help.
Thank you

The Liars' Club (1993) (http://www.videodetective.com/movies/trailers/the-liars-club-trailer/394096)