Whitney bursts into tears after her mother criticizes her unconventional marriage, so Alex attempts to comfort her, but things go south when he gets aroused. Meanwhile, Roxanne becomes jealous when she realizes Lily knows Whitney better.
After Alex admits he "faked it," Whitney decides they need to come clean about their past lies, which goes well until Lily opens her mouth. Mark hires Alex's high school buddy R.J. as the new bartender.
During his college guest speaking engagement, Alex falls off the stage, which Whitney finds hilariously funny, though Alex fails to see the humor. R.J. encourages Mark to be chivalrous with Roxanne, who rejects his efforts.
Alex agrees to let his ex-fiance Chloe crash on the couch during her stay in town, which causes a rift with Whitney. Lily can't find privacy to have sex with her new boyfriend, and Mark worries that his apartment is driving women away.
Alex's allergy to Whitney's homeopathic remedy leads to the revelation that she has a heart condition. Lily introduces the gang to her boyfriend Eddie, who has difficulty communicating his thoughts.
Whitney is contacted by her ex-boyfriend Nate, who is looking to make amends, but his passive aggression rubs Whitney and Alex the wrong way. Lily is befuddled when Nate doesn't recognize her, and Mark tries to control Roxanne's drinking.
Alex lies about work and sneaks off to a coffee shop for some alone time, but Whitney and her friends catch him. Lily is miffed when she can't make a connection with R.J.'s niece.
When Alex's brother Brian returns for a visit, his bullying causes both his wife and Whitney to explode. Lily orchestrates a secret date for Mark and Roxanne at Costco, but other cars are parked so close that they're trapped on the street.
Whitney's father, Vince, pays a visit and gives her $5000, which she gives to Lily to get back on her feet. Lily entrusts the cash with Roxanne, who promptly loses it, and then Vince asks for the money back.
When R.J. and Alex decide to relive their youths by buying motorcycles, Whitney's protests fall on deaf ears. Meanwhile, Lily decides to assert her newfound authority at the bar, which doesn't sit well with Mark.
Whitney and Alex decide to celebrate their honeymoon at his parent's lake house, but they are surprised to find his father staying there alone. Meanwhile, Mark, Lily and Roxanne snoop through their apartment.
Alex freaks out when Whitney shows the group a photo of her butt. He decides to retaliate by taking a nude selfie, but Lily and Roxanne walk in on him. Also, everyone reveals their trigger insults, and RJ confesses his fear of spiders.
When Whitney forces Alex to hang out with Lily, he's surprised that he has a good time, so he makes the disastrous decision to set her up with a needy friend. RJ's and Mark's competitive nature results in a dart lodged in Roxanne's back.
Things get weird after Alex and Whitney spot her psychiatrist, Dr. Price (Chelsea Handler), ferociously eating an entire birthday cake in the park. Meanwhile, Roxanne becomes jealous when Mark begins dating Lulu.