Alan and Walden have a meeting with an adoption social worker that hinges on them being convincing as a loving couple. Lyndsey returns after 60 days in rehab.

Alan must face the consequences after revealing his identity to Larry.

Alan’s girlfriend, Gretchen, insists he confess his true identity to Larry. Meanwhile, Walden goes on a road trip with Jenny and Barry to see his first car.

Walden gets an invitation to his ex-girlfriend’s boutique opening. Meanwhile, Gretchen wants to spend more time at Alan’s (a.k.a. Jeff Strongman) house.

Lyndsey finds out about Alan’s relationship with Gretchen; Walden has a difficult time telling Barry to find his own place.

Walden thinks his girlfriend is cheating on him; Alan starts dating Larry’s sister, Gretchen (Kimberly Williams-Paisley).

Alan asks Lyndsey to choose between him and Larry; Jenny worries that she and Brooke are growing apart.

Alan finds out that Lyndsey broke up with Larry without telling him; Walden tries to prove he is a man’s man.

Lyndsey’s boyfriend sets Alan up on a date; Walden wants to help Nicole with her project so she will have time to date him.

Alan and Lyndsey’s illicit affair puts Walden in danger, forcing him to accept Rose’s help.

Walden and Alan find themselves on dates with two ideal women until Lyndsey’s jealousy throws a wrench in their evening.

Alan tries to find out what Lyndsey’s boyfriend has over him; Walden helps Jenny pursue her acting career.

Jenny moves in with Evelyn and her wealthy boyfriend, Marty (Carl Reiner).

Alan has a difficult time coping when Lyndsey breaks up with him.

After a fight with Walden, Alan decides to move in with Herb.

When Walden runs into his ex and they start talking about getting back together, Alan worries that she is not good enough.

Depressed on Valentine’s Day, Walden tries to talk Kate into giving him another chance; Alan’s holiday plans go south.

Alan is faced with relationship trouble when he does not give Lyndsey a key to the beach house; Walden, Alan, Herb and Billy commiserate about relationships.

Alan and Walden go to Kate’s fashion show in New York so Walden can reveal the truth about his identity.

Walden juggles his two identities; Alan ends up alone on Christmas.

Alans famous ex-wife, Kandi, wants to reconcile; when Berta isn’t interested in celebrating her birthday, Walden tries to make her day special.

Alan feels reluctant to make a commitment to Lyndsey, but an unexpected source inspires him; Walden enjoys being the boy-toy of a wealthy older woman.

Despite Alan’s warnings, Walden starts dating Rose.

Alan and Lyndsey decide to spice things up in the bedroom.

Jake is pressured to make a decision about his future.

Alan is showered with love and affection upon returning from the hospital, but Zoey isn’t so sure it’s deserved.

Charlie’s ghost pays a visit to Alan after he suffers a minor heart attack.

Walden’s commitment is tested when Zoey and her daughter come to live with him. Meanwhile, Alan gets more than he bargained for when he moves in with Lyndsey

Walden breaks the news to Zoey that he is going into business with his ex-wife. Alan and Lyndsey try to cope with their mom’s relationship.

Alan and Lyndsey introduce their mothers. Jake and Eldridge get a ride from Walden to a party.

Walden and Zoey’s relationship suffers after they share a near-death experience. Meanwhile, Alan wonders if Lyndsey has a drinking problem.

Strained relationships and girl-fighting result when a huge storm traps Walden, Alan, Zoey and Lyndsey in the house on Valentine’s Day.

Zoey tries to convince Walden to cut his hair and shave; Alan and Lyndsey revive their relationship.

Upon his release from the hospital, Alan is met with a slew of challenges that test his ability to cope.

Alan has trouble accepting Lyndsey’s seedy movie past, and Walden tries to cheer him up by throwing a party.

Walden goes looking for Mrs. Right while Alan has an opportunity to reconcile with Lyndsey.

Alan tries for an intimate night at a hotel with his new girlfriend, while Charlie takes a different approach to obtain the “girlfriend experience”

Alan is torn between the bad influence of Jake’s new friend and the hotness of his mother.