My Best Friend's Girl(2008)

Smart, beautiful and headstrong, Alexis is the girl of Dustin's dreams. But after only five weeks of dating, the love-struck Dustin is coming on so strong that Alexis is forced to slow things down--permanently. Devastated and desperate to get her back, Dustin turns to his best friend, Tank, the rebound specialist. A master at seducing--and offending--women, Tank gets hired by freshly dumped guys to take their ex-girlfriends out on the worst date of their lives--an experience so horrible it sends them running gratefully back to their beaus. But when Tank works his magic on Alexis, he ends up meeting the challenge of a lifetime. Alexis is the first girl who knows how to call his bluff, and Tank soon finds himself torn between his loyalty to Dustin and a strange new attraction to his best friend's girl.