Kristen and Nia relive their fertility journeys; Jesse and Michelle clash over the their divorce.

Jax spoils Kristen and Luke's engagement after Brittany inadvertently reveals the news to him; Kristen and Zack are fed up with Brittany always choosing Janet over them; all hell breaks loose when Janet and Kristen reach their breaking points.

Jax opens up about his sobriety journey and continues to butt heads with Brittany.

In the wake of the cruise from hell, Janet struggles with insults Kristen threw at her; Danny and Nia look at a house as they get closer to their decision on having a fourth child; Jax and Brittany have an argument when discussing co-parenting.

Tensions boil between Jasmine, Janet and Jason; Zack starts to realize that his friendship with Brittany has shifted; the rumor Kristen started continues to wreak havoc in the friend group; Brittany uncovers a shocking breach of privacy by Jax.

The Santa Barbara trip comes to a dramatic end as Nia fights back against Brittany, Jasmine and Janet; back in L.A., Jesse seeks guidance as he hopes to rebound from his wine country fight with Michelle.

Jesse and Michelle experience a breakthrough in their relationship; Kristen comes to terms with her fertility journey; conflict takes the spotlight at Michelle's Zen party; Jax comes clean about his battles.

Unbeknownst to Kristen, a fishing trip Luke planned is where he plans to pop the question; Brittany feels hurt and left out when she learns she isn't a part of Kristen's proposal; Janet threatens to leave the trip early.

Kristen and Luke's housewarming takes a turn; Brittany prepares for Jax's return by meeting with a divorce attorney; Jasmine and Melissa try to mend things with Jason and Janet; Danny is accused of overindulging again.

The group's Santa Barbara retreat continues to unravel; emotions escalate between Jesse and Michelle leading to an explosive argument; Nia is blindsided when Zack tells her that some of the group has been talking behind her back.

Luke finalizes plans for a trip to Hawaii where he plans to propose to Kristen; Janet, Michelle, Kristen and Nia butt heads during a girl's night out; Jesse confronts Aaron about the timeline of his relationship with Michelle.

Jax becomes upset when he finds out about the party at Britt's; the guys take Jax to a dinner that leads to a confrontation between Jason and Danny; the tension between Nia and Janet comes to a head; Jax is blindsided by a special delivery.

Danny and Nia continue to struggle with their newborn daughter refusing a bottle; as Kristen grapples with postpartum blues, her relationship with Luke is tested when their first date night out without Kaia turns into a disaster.

Danny and Nia juggle four under four, while Kristen and Luke don't see eye-to-eye as they transition to first-time parenthood; Brittany tries to get her sparkle back in a new relationship, but Zack worries they're moving too fast; when Kristen and Nia co-host a Sip and See event, Michelle becomes anxious when Jesse's girlfriend Lacy surprisingly shows up.

Tom introduces his crush, Kiana, to his friends. The group takes a train to San Diego and Janet tries to build a stronger friendship with Zack. Danny starts to lose his patience with Nia. Kristen and Luke struggle on their first trip as new parents. Michelle and Lala share an emotional moment.

Brittany takes the first step toward regaining her self-confidence with a mommy makeover consultation; Jasmine's growing friendship with Lala is tested on a girls' night out, leaving Michelle in the middle.

Lala invites most of the group to celebrate her daughter Sosa's first birthday, leaving some feeling excluded; Janet tries to make amends with a few members of the group; Tom and Michelle's bond continues to grow.

In the aftermath of Janet’s birthday party, Nia is angry about Jax pantsing her husband, Danny, in front of the group. Jesse finds himself in hot water with Kristen and Luke over an inappropriate action. Jax’s guy’s night comes crashing down when he invites a surprise visitor who blindsides Luke. While across town, Kristen unleashes an accusation against Michelle that could ruin their friendship forever.

Jesse and Michelle deal with the aftermath of their Capri-themed dinner party, leaving the group on shaky ground with Kristen. Brittany opens up to Jax about their lack of intimacy. Luke plans a special date for Kristen with the help of Danny and Brittany. Janet invites the group to a charity gala where Zack tries to get Kristen, Jesse and Michelle to squash the beef between them.

Jax's life comes under tough scrutiny as he's confronted about his recent behavior; he finally admits he's at rock bottom and elects to seek professional help; Zack tries to find stability in his friendship with Brittany.

The ladies retreat to Malibu for a girls’ night while leaving the boys to daddy daycare. Michelle opens up to Brittany that she isn’t sure she wants to stay with Jesse. Brittany shares that she isn’t getting any intimacy from Jax. The ladies are concerned for Nia as she struggles with postpartum depression. The old Jax returns as he stirs up some interesting rumors about one friend in the group.

Jesse finally learns about the rumors swirling about his wife, Michelle; The guys come together to support Danny, who is feeling the mounting pressures of fatherhood.

The group celebrates the opening of Jax and Brittany's new bar; Janet comes face to face with Zack for the first time since her babymoon; the truth about Jax and Brittany's and Michelle and Jesse's marriages is revealed.

The women throw a surprise baby shower for Janet; The whole group indulges in a dinner for the final night in Big Bear dressed as their partner's fantasy.