The Best Man (2010)

At a wedding rehearsal dinner, best man Mark charms the bridesmaids with animated tales of past food service jobs, though he's now a video editor. Mark seems to be a hot property with every available female until his "oldest friend" Karl shows up, casually mentioning his stratospheric rise in the entertainment industry. Karl proceeds to seduce everyone in sight, driving Mark to drink alone in the kitchen and leave the party unaccompanied. Some time later, Karl and Mark meet at a coffee house where Mark learns that Karl's willy-nilly conquests sometimes result in unforeseen consequences.