Player in Training (2005)

When a cruel ex-girlfriend cheats on him, tender-hearted Eric swears off female worship, enlists the help of the ladies' man next door and devotes his energy to becoming a player. Once he manages to rack up dozens of romantic conquests, his ego soars -- and he doesn't spill a drop of emotion. But when his newfound image ends up hurting a good woman, he rethinks his entire approach to relationships.