With encouragement from Walden, Alan decides to update his look; Alan is faced with a moral dilemma when he attracts a married woman.

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

Walden and Alan are caught in the crossfire when Jake cheats on his girlfriend (Jaime Pressly) with her 18-year-old daughter.

Alan and Walden end up partying too hard as they try to cheer up Herb.

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.

When Jake brings his 36-year-old girlfriend home for a visit, Alan is concerned; Walden tries to hide something from Alan.

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.

Alan invests Walden’s money in Kate’s fashion line; leading a double life takes its toll on Walden.

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

Alan helps Walden create a new identity so he can avoid women who are only interested in his money.

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.

When Walden gets tired of the complications that come with a traditional relationship, he hires an actress to be his girlfriend; Jake plans a rendezvous with Missi (Miley Cyrus) at the beach house.

Walden must choose between Zoey and Rose.

Despite Alan’s warnings, Walden starts dating Rose.

Walden starts to feel his age when a friend’s daughter comes to town.

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

Zoey and Walden break up, causing Walden to experience a breakdown.

Walden plans a big surprise for Zoey’s birthday.

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’s ex-business partner shows up at the beach house looking to make peace.

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.

Walden tries to loosen Zooey up by sharing some of Berta’s special brownies.

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

Walden’s ex-wife and mother try to take control of his company, so he turns to Alan for help.

Walden’s mother arrives and Alan is smitten with her, even as she reveals a secret about Walden’s past that sends him into a downward spiral.

Walden is trying his best to impress his new love interest when Bridget reappears in his life.

Walden hits it off with a British babe, but neither of them is sure he’s ready to re-enter the dating world.

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

When Walden begins redecorating the beach house, Alan becomes overly emotional.

Jake has a crush on his chemistry tutor, who has a crush on Walden. Meanwhile, Alan obsesses over the journal his brother left him in his will.