Pete wants to break up with his girlfriend Melissa because he doesn't think, she's "the one"; however, just as he's deciding against it, Berg tells Melissa.

Pete and Berg, who feel neglected by Sharon since she has a new boyfriend, plan to sabotage her relationship.

A musical trio narrates the tale of Sharon and Ashley's night of drunken bonding that lands Ash in Sharon's wedding party. Meanwhile, Pete fails to clean up with a woman he meets at a laundromat bar.

Pete, who has a big presentation to make in front of the museum board, might have accidentally swallowed an overdose of an allergesic Berg is testing out.

Pete, a huge Boston Celtics fan, is extremely jealous of Berg when Berg gets to sit on the bench with the Celtics. Berg tries to cheer him up by "borrowing" the Celtics championship banner.

Pete and Berg fight back against their landlord when he goes over the edge with the rules for living in the building.

Pete has to choose an elective course. He chose metallurgy but when Berg brought his course choice card in he changed it for a course in sports broadcasting. At first Pete's mad at Berg but soon learns to enjoy it. Also Sharon tries to prove that her boyfriend isn't dumb.

The guys try to save someone's--anyone's--life after Johnny's tape of Sharon rescuing a choking man turns her into a local hero. Meanwhile, Ash finds some kind of salvation after she lands in jail for fighting with a cop at a sobriety checkpoint.

Berg gets suspicious of Pete when he always want's to deliver the pizza to 845 Arlington. So Berg makes the delivery for a change and discovers that it's a gorgeous artist who paints with her nude body that's been making the orders. This leads Berg and Sharon to believe that Pete is cheating on Melissa with her.

Pete gets an internship thanks to Ashley but gets fired when he's caught having sex with the boss' daughter, Ashley's sister.

Pete, Berg and Sharon get invited to the wedding of one of Pete's ex-girlfriends. Pete wants to reveal to the groom that she's only marrying him because she wants to get married, but he doesn't. Ashley finally reveals her true feelings for Berg but she tells him that she has a boyfriend at Oxford.

When Sharon uses an embarrassing underwear ad that Berg had posed for four years prior, for a contest he goes to great lengths to get one of her. Pete realizing he has no parental rights with Michael because he's just the guy dating the mother asks Kaitlyn to marry him. She refuses on the basis that they've only known each other a month and tells him that they should take a break from each other for a while.

Ashley comes back and tells Berg she dumped Justin to be with him. Berg now has quite a dilemma, choose Ashley the woman he's been chasing for months or Vanita a woman he's just met. He wants to choose Vanita because he thinks he has a better chance with her. So he dumps Ashley but she won't let go she follows him to the restaurant where he has a date with Vanita and ends up breaking them up. Johnny and Sharon get back together.

While Berg steps into the ring as a cut man for a boxer, Ashley, Pete and Sharon fight out their differences.

Berg is suspicious that Ashley might be posing nude for a professor. Johnny's four sisters and three of them are pregnant. Berg delivers a baby.

Sharon can't seem to give Johnny an answer at first but eventually comes out with "Yes, in theory" as it's obvious she's not sure about marrying him but doesn't want to hurt his feelings. Pete flies to Paris to get away from everything and gets hit by a car driven by a beautiful French woman that he later starts dating, even though she can't speak a word of English.

The guys at the firehouse find Pete's make-up bag and the fire chief asks Pete to give his daughter a makeover. In hopes of getting off probation at the hospital Berg lends his apartment to his superior so she can take a nap but she has an affair instead. Sharon has a tea party and Pete and Berg's invites members of the hospital but the wrong ones show up first and they think that she's running a prostitution ring.

Germ feeds Sharon a batch of bad advice about how to get Johnny to fix the home in a more timely manner. Meanwhile, Pete has Marti burning mad when he bugs her about their romance during a rescue.

A client's philandering hubby has Sharon fearing for her own man's fidelity; Berg faces temptation at the hands of a comic-book artist who has fond memories of him from high school.

Berg and Pete start a co-ed baseball team in order to meet more women. Bill, being their sponsor is led to believe that team is actually good and challenges one of his competitors to a game.

Berg sets Pete up with a patient at the hospital called Lauren in an effort to get Pete over his recent breakup with Melissa. It's only when Pete starts to really like her and starts calling her "The One" that Berg finds out she may not have long to live. It turns out though that Lauren is not dying, but she does live in Colorado. In the end, Pete is glad that he's been dumped by Lauren because it made him forget about Melissa which means he's ready to start dating again.

Berg and Sharon set Pete up with a girl they find listed in the personal ads, but she soon makes it clear she won't let anyone come between them, even to come in Berg's bedroom at night with a baseball bat.

Pete is trusted to keep the fact that Berg's dad has quit his law firm to become a caricaturist in the park from Berg and that Berg is no longer in law school from Berg's father.

When Berg notices he's no longer first in his class he goes out to find who is. He finds out it's a beautiful female co-ed, so he tries to get her get drunk so she won't be able to study for the test the next day.

When Berg finds out that Ashley went to visit her boyfriend at Oxford he flies all the way to England to be with her. It turns out it is Oxford, Mississippi. Ashley's boyfriend says he'll move to Boston so they can stay together. Pete and Johnny get jobs as limo drivers. Berg and Ashley finally kiss.