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Alan reveals his true identity to Larry, and must pay the consequences.

Gretchen demands Alan reveal his true identity to Larry.

Walden reconnects with Kate and is confident she's "The One" - that is, until he encounters Vivian. Meanwhile, Alan and Gretchen connect on a deeper level.

Walden is invited to his ex-girlfriend's boutique opening. Meanwhile, Gretchen is looking forward to spending more time at Alan's house.

Lyndsey finds out who Alan is sleeping with. Meanwhile, Walden doesn't know how to tell Barry to find his own place.

Walden is under the impression that he is being cheated on by his new girlfriend. Alan begins seeing Larry's sister, Gretchen, and becomes even more involved in Lyndsey and Larry's relationship.

Alan gives Lyndsey an ultimatum. Meanwhile, Jenny fears she and Brooke are drifting apart.

Alan discovers Lyndsey broke up with Larry, but failed to tell him. Meanwhile, Walden is on a mission to prove that he's a man's man.

Walden and Alan throw Marty a bachelor party after he asks Evelyn to marry him.

Alan gives Lyndsey's boyfriend, Larry, permission to set him up on a blind date. Meanwhile, Walden offers to help Nicole with her software project so she'll have time to date him.

Walden signs on to work with a beautiful former employee on a brilliant new project. Meanwhile, Alan counsels Jenny to open up to her girlfriend.

Walden helps Jenny get a second date with her one-night stand. Meanwhile, Alan has an interesting exchange with his transgender girlfriend's ex-wife; and receives a Japanese delicacy from his son for Christmas.

Walden's date with an accident-prone model drags on. Meanwhile, Alan dates a woman who shares some unexpected personal information with him.

Alan and Lyndsey's illicit affair threatens Walden's safety, forcing him to accept Rose's help.

Walden and Alan are on dates with two seemingly perfect women until Lyndsey's jealousy complicates matters.

When Alan discovers Walden knows Lynda Carter, he hopes Walden will set him up with her. A hesitant Walden agrees to invite her to the house for dinner.

Alan becomes friends with Lyndsey's boyfriend to find out what he has that Alan doesn't. Meanwhile, Walden encourages Jenny to be more assertive in pursuing her acting career.

Walden parties with Jenny and her attractive friends. Meanwhile, Alan and Lyndsey's illicit affair could be threatened.

Walden and Alan think Berta needs to retire when she suffers an injury at work.

When Walden starts feeling confined in his own house, Jenny moves in with Evelyn and her boyfriend, Marty. Meanwhile, Alan becomes Lyndsey's "other man."

In the eleventh season premiere, Charlie's 25-year-old daughter unexpectedly appears at Walden's beach house in an attempt to connect with the remaining members of her family.