After Charlie’s license is suspended, Jake becomes his driver; Alan plans to go to Chelsea’s birthday party.
While Alan and Jake are away on a road trip, Charlie is visited by the ghosts of his ex-girlfriends
Alan tries for an intimate night at a hotel with his new girlfriend; Charlie tries his own approach to get the “girlfriend experience.”
Alan is torn between the bad influence of Jake’s new friend and the hotness of his mother.
Charlie has a return engagement with Gail (Tricia Helfer), Chelsea’s best friend; Alan has a surprising effect on a female patient.
Charlie and Chelsea have a post-breakup one-night stand.
After running off to Las Vegas, Charlie returns with a new wife.
Chelsea is put off by Charlie’s jealousy.
A bar fight lands Alan in jail; Charlie worries that Chelsea is interested in the lawyer who takes Alan’s case.
Charlie has a colonoscopy to avoid visiting Chelsea’s parents, who he then finds in his house when he gets home.