Sprung (movie, 1997)

Two pairs of best friends - Montel & Clyde and Brandy & Adina meet at the party, where Clyde makes Adina think he is very rich and gets her into bed the same evening. When Adina finds out that she's been fooled, she becomes Clyde's worst enemy. Meanwhile Montel and Brandy fall in love and plan to marry, and Adina and Clyde try to do everything to stop them.