While John finds himself tangled up in Littia's sexual schemes, Bill has second thoughts about his recent choice to get married and goes to Mike for advice.

Littia debriefs Alice about her night, John approaches Greg about Darla's identity, and Bill is weighing his relationship options when he receives an unexpected houseguest.

Regina's mother attempts to move into Bill's apartment, John confides in Alice about Littia's pregnancy plans, and Greg and Darla's first date makes them both anxious.

John and Alice devise a plan to get Littia out of the picture, Mike struggles with his sobriety, and Greg considers taking his relationship with Darla to the next level.

Greg learns that John and Darla have a past, Alice advises Littia on getting John's attention, Mike and Pam reconnect, and Bill's sex life suffers when Regina's mom comes to visit.

John suspects Littia is the culprit when his house gets broken into, Claudia pays Bill a tension-filled visit, and Greg confronts Tom about disrespecting his relationship with Darla.

Bill struggles with his connection to Claudia, Tom gets flirty with Dina at the office, and Darla challenges Greg over his dodgy behavior in their relationship.

Pamela encourages a reluctant Regina to spy on Bill, Bill has an encounter with Claudia, Darla and Dina gang up on Greg, and Alice and John demand answers from Littia.

John is shocked when Littia stands up to Alice, Darla flaunts her handsome date in front of a jealous Greg, and Bill gets some disturbing news about Claudia's dangerous marriage.

John meets the real apartment-trashing culprit, Bill confides in a friend about his affair, Pamela warns Regina about her living situation, and Dina's naughty proposition leads to trouble.

Darla helps Tom and Greg out of a jam, Regina makes a deal with Bill regarding her mother, and Littia refuses to leave the sandwich shop until she gets an apology from John and Alice.

Pamela warns Regina not to trust Bill, Greg confides in Tom about his ex-wife's financial demands, Regina introduces her mom to Alice, and Bill and Claudia make a horrifying discovery.

Darla and Greg try to make a fresh start, Tom and John discuss their concerns about Mike and Bill, and Alice and Hilda discover a troublesome similarity.

Hilda confronts Alice about her betrayal, Darla sends Greg mixed signals after their failed date, John deals with an unwanted houseguest, and Regina accuses Bill of cheating.

Regina fights for her relationship as cheating rumors swirl around Bill, Pam worries that Mike is facing a big setback, and Tom evades serious accusations about Bill's fidelity.

Dina attempts to make amends with Tom, Regina goes to Alice for advice, Pam confronts Mike about his money problems, and Claudia has a shocking proposal for Bill.

Bill and Claudia discuss the boundaries of their affair, John gets held up by Alice's romantic antics at work, and Pam is determined to help Mike -- though it may be too late.

Pam and John attempt to gather Mike's closest friends for an intervention, though Bill is distracted by his ongoing entanglement with Claudia and Regina's mounting suspicions.

Tom and Greg try to revive Mike, Regina considers calling it quits in her marriage to Bill, and Hilda threatens to take Alice to small-claims court.

As the friends await word on Mike's condition at the hospital, John gets an unexpected visitor, Alice tries to comfort Pam, and an inconsolable Bill lashes out at Regina.

John delivers some hard truths to a friend who needs them, and the guys face a difficult decision after things come to a head with Mike.