Ladies man Ben has his life turned upside down when an ex leaves the daughter he never knew he had on his doorstep.

Ben and the guys try to come up with the perfect babysitting schedule.

Ben tries to get a date with a hot nurse treating Emma.

The boys are getting fed up with Bonnie always being at their apartment.

Ben's new boss assumes him and Riley are married, so he convinces her to go along with it.

Ben and Tucker both try to hook up with the same woman.

Ben tries to clean up his act by taking a Mommy and Me class.

It's Emmas first christmas family photo and Ben wants the whole family on it, including his dad.

Riley is excited to be maid of honor at a friends wedding but then Ben makes a mess of everything at the batchelorette party.

Ben, Danny and Tucker band together to rescue Emma's missing stuffed animal. Meanwhile, Riley hosts a book club in an effort to make friends with the cool girls at work. When her mom, Jennifer, and Bonnie get wind of her plans, they invite themselves. Much to Riley's dismay, the ladies' long-standing rivalry erupts during the club meeting.

Ben, Danny and Tucker end up in jail when their plans to attend a big Halloween party go awry.

A grumpy Ben wishes there was no such thing as Christmas, then is shocked when the fulfillment of his desire not only erases the holiday, but Emma's existence as well.

Danny prepares to join Georgie in Paris; Ben suspects that Riley may have feelings for his brother; Bonnie begins selling Danny's hockey memorabilia.

Danny turns to Bonnie's ex Brad for help, as he doesn't want the gang to know what happened with Paris and Georgia.

Tucker enlists Ben and Riley to appear on Mary Hart's program and reveal how they foiled an attempted mugging; Bonnie hopes to get rich by using Emma in a series of Internet videos.

Danny receives a cameo role on "General Hospital" and nervously prepares for his scene with actress Kelly Monaco; Tucker and Ben stage a funeral for Bonnie.

Ben and Danny gamble on their mom's love life.

Ben panics when he forgets his mother's birthday; Danny learns surprising news that overshadows Bonnie's party; Emma is injured while in Riley and Tucker's care.

The navy are in town so Ben and Tucker pretend to be sailors in order to score with the ladies.

Danny stumbles upon a family secret while planning a birthday bash for Bonnie with Ben, Riley and Tucker.

Bonnie and her old boyfriend Brad are in competion for a huge listing so she decides to seduce him in order to beat him.

Riley knows she has to tell Danny she has feelings for him before his relationship with Robyn gets any more serious.

After making a mess of her confession to Danny, Riley retreats to her parents’ house to hide.

Emma's babysitters feel unappreciated, so they go on strike, forcing Ben to bring Emma along on his dates and shifts at work. Meanwhile, Danny and Bonnie enroll in a cooking class with her favorite chef; and Tucker tells Riley to invent a fake boyfriend.

Ben and Riley make a bet concerning strangers in a bar and it leads to trouble at work for both of them: Riley sleeps with a stranger who becomes her new boss, and Ben sleeps with the wife of the man who's trying to purchase the bar where he works.

Tucker hires Riley to represent him in a lawsuit against a construction company, but his hazy memory makes the case challenging for her. Meanwhile, Bonnie predicts her sons will fail as bar owners, and she attempts to hasten the demise of their business.

Ben corrupts Ross by spending too much time with him, which infuriates Riley and leads her to declare a war in which Ross—unbeknownst to him—is the prize. Meanwhile, Bonnie wants to join the guys' poker game.

Ben attempts to work out who should receive custody of Emma in the event of anything bad happening to him.

Riley hosts a cocktail party in order to meet Ross' friends, and Ross tells Ben not to attend. Meanwhile, Danny tries to figure out his new girlfriend's last name; and Tucker starts divulging secrets after he has too much to drink.

The gang reflect on their past entanglements, forgetting to safeguard a cherished item of Bonnie's in the process.

The gang head to Las Vegas, where Tucker's hidden hobby is exposed.

In the Season 4 finale, Bonnie's wedding planner quits as her big day draws near, so her best buddy, Charlotte, volunteers to help, but Charlotte has an ulterior motive. Meanwhile, Ben decides to let Danny and Riley have a shot at romantic happiness.

Ben meets someone new, and Riley has a surprising reaction to Danny’s proposal.

When Emma starts calling every woman she sees “Mommy,” Ben decides it’s time to find someone with whom to be serious. He turns to Riley to find him a date, but she thinks Ben is not ready to settle down and sets out to “build a better Ben.” Meanwhile, Danny asks Bonnie for help when his sleeping troubles affect his hockey performance. But her help could get Danny into even bigger trouble with his team.

While looking for a new bar manager, Ben interviews his old crush Sam, and decides to get revenge on her for never noticing him in high school. But things don’t turn out as planned.

After witnessing the wrath of Tucker’s boss, Mary Hart, Ben films one of Mary’s rampages intending to show Tucker how badly he’s treated.

Tucker finds Zoey snooping around his apartment and assumes she is there for him, so he takes it upon himself to ask her out. However, Zoey believes Tucker is setting her up with Ben. Danny finds himself in a similar situation when he tries subtly asking Sam how he feels about Ben, but she thinks Danny is asking her out. And Riley finds herself in an uncomfortable situation when her client tries to take things to the next level with Bonnie. Are there any perfect matches?

When Danny finds out that Ben is still Riley’s emergency contact, he acts as if Ben and Riley’s relationship didn’t count. So, when Ben attempts to prove that his and Riley’s relationship meant something, things become awkward for Riley and Danny. Meanwhile, Bonnie flirts with someone who’s in power to further her own agenda, and Tucker rekindles an old flame.

Emma’s mom, Angela, returns wanting to make amends with Ben and build a relationship with Emma.

When Ben learns that Sam’s living arrangements have fallen through, he schemes to push Danny and Riley to move in together so Sam can take his room.

Riley is frustrated that Ben only has eyes for Sam and not for Zoey, who she thinks is perfect for him.

Sam invites Ben, Riley and Danny to the Hamptons for the weekend, leaving Ben confused as to whether he wants to be with Sam or Zoey. Riley finds some old home movies of everyone in high school, but she discovers more than a trip down memory lane. Meanwhile, Bonnie is convinced that Brad has moved on, so she also moves on with another guy, however their evening does not turn out as planned. And Tucker is excited to finally have the apartment to himself.

Danny is desperate to make up with Riley after their recent breakup, but she is still furious after learning he hooked up with Sam in high school. Determined to prove that she is not overreacting, Riley puts Danny on “trial” for breaking her heart, with Bonnie acting as Danny’s lawyer. And Ben tries to save face with Zoey after discovering that her ex has returned to get back together with her.

Ben discovers Tucker has been making extra cash by visiting a sperm bank. In order to help Tucker pick up a nurse at the bank, Ben agrees to donate his own sperm but quickly regrets his decision after a couple chooses his sample. Riley and Danny continue to fight while attempting to host their friend’s engagement party. Their moms, archenemies Bonnie and Jennifer, team up to get Riley and Danny back together.

Ben admits he never graduated high school and decides to go back to school in order to set a good example for Emma. Bonnie later confesses that she also did not graduate, so both must pass a final exam, instructed by Ms. Gilcrest, in order to get their diplomas. Riley and Sam are both inducted into the athletic hall of fame and argue over prime territory for their trophy case.

Bonnie is less than thrilled when she finds out that Ben invited her estranged mother Nana Lyle to town for Emma’s preschool’s family weekend. Meanwhile, Riley and Tucker enroll in an improv class in order to step out of their comfort zones and help them out in their respective careers.

Ben poses as Bonnie’s husband, Brad, when her friends from work don’t believe that she has an attractive, younger lover. When Danny begins dating a beautiful actress as a publicity stunt, Riley, who believes the relationship is real, decides to go back out with Ross to make Danny jealous. Tucker tries to further his entertainment reporting career by getting the real scoop on Danny and his new girlfriend.

As Ben and Riley both realize they are in for more than they bargained for with dating older, more mature adults, they work together to come up with a plan to get out of their respective relationships. When Bonnie and Tucker gain insider information about players on Danny’s hockey team, they bet against the Rangers to win some cash.

When Ben receives an anonymous note from a past love interest asking for a second chance, he does whatever he can to find the mystery girl. Danny misunderstands a note he thought was left for him and tries to get Riley back. Tucker, Riley and Bonnie enter Emma into a baby beauty pageant to get footage for Tucker’s news segment, but Riley goes too far.

When Ben’s first date with his new lover doesn’t go well, Danny and Riley step in to help sort out the couple’s issues, but their assistance quickly causes more harm than good. Tucker decides to tell his dad about his new relationship with Renee, one of his dad’s co-workers, but panics when he learns that his dad may have feelings for Renee too.

After Emma accidentally pokes holes in Ben’s stash of condoms, Ben, Tucker and Danny all fear their girlfriends might be pregnant. They discreetly try to find out if there’s anything to worry about while the girls pretend to have pregnancy symptoms to get them to confess the truth.