THINGS GET CRAZY BETWEEN BREANNA AND ARNAZ WHEN THE ROOMMATES TURN THEIR AMICABLE BREAK-UP INTO A FIGHT OVER WHO DUMPED WHOM, ON "ONE ON ONE," MONDAY, FEB. 27 ON UPN

Ray J's Real-life Sister Brandy ("Moesha") Guest Stars as Michelle, D-Mack's Sister

"Dump Me? Dump You!" � Things turn ugly when the roommates twist Arnaz and Breanna's amicable break-up into a fight over who dumped whom, and making matters worse, Arnaz and Michelle (guest star Brandy) start spending time together, leading a jealous Breanna to confront Michelle to find out what she really wants with Arnaz, on ONE ON ONE, Monday, Feb. 27 (8:00-8:30 PM, ET/PT) on UPN. Maynard Virgil directed the episode from a script by Dan Cross & David Hoge.

Meanwhile, after seeing Arnaz's passion for music, Michelle realizes she must follow her own dreams and enlists her brother D-Mack's help in dealing with their parents.

Breanna Barnes: Kyla Pratt
Arnaz Ballard: Robert Ri'chard
Cash Bagen: Jonathan Chase
Lisa Sanchez: Camille Mana
Darrell "D-Mack" McGinty: Ray J
Sara Crawford: Nicole Paggi
Michelle McGinty: Brandy
Benjamin: Ernie Grunwald
Greg: Michael J. Pagan
Female Customer: Yvette Brooks

RATING: To Be Announced