The girls swap boyfriends for a night. Later, they must decide if they are going to stay in Jersey City or move home with their boyfriends.

Snooki and Jionni throw a party for Lorenzo's first birthday; Roger wants to know where Jenni stands on marriage.

Snooki and Jenni decide to have one last celebration before their lives become too serious.

Snooki and Jenni invite their ``Jersey Shore'' roommates over for dinner.

Snooki & JWOWW are back to making memories with an all new season. Snooki & Jionni decide it's time to get their own place, while JWOWW & Roger consider couples' therapy to solve their relationship issues.

Jenni tries to train the dogs to become service animals; Snooki and Jionni leave the LaValle basement.

Snooki and Jenni have a girls weekend in Atlantic City, N.J.; the guys are left to watch Lorenzo, but Jionni gets Janis to babysit so they can play paintball.

Snooki and Jenni shop for a wedding dress; Jenni realizes she may want to get married.

JWoww and Roger get used to life as new parents. Snooki and Jionni plan an elaborate welcome home party for Meilani complete with a mariachi band.

Exhaustion takes its toll on new parents JWOWW and Roger. Snooki turns into a bridezilla while planning her Gatsby-themed bridal shower.

Snooki and Jenni participate in a charity dog wash; Roger and Jionni plan a romantic dinner; Snooki takes a DNA test.

The gang spends a couples weekend at a dude ranch; even though the women want romance, the men spend the time pulling pranks.

A fight erupts over a bachelor party when Jionni and Roger come over.

Snooki gets an ultrasound of her fetus. She and JWoww also decorate their home.

The former roommates razz Snooki for being pregnant and engaged.

Snooki gets jealous when JWoww makes a new friend at a cooking class; Snooki volunteers at a doggie day care; JWoww and Roger's relationship hits a rough patch.

Snooki and JWoww surprise their significant others by taking them to a drag show. Also: Snooki and Jionni celebrate their engagement with their families; JWoww and Roger’s relationship troubles continue.

The ladies head to Cancun to party it up and enjoy some time in the sun. Snooki finds herself unable to let loose while pregnant, leading to a late night fight in a club.

The girls' friendship is tested on their last night in Cancun. Later, JWoww and Roger's relationship hits another rough patch, while Snooki starts to question her engagement to Jionni.

Snooki and Jionni get into an argument on his birthday over a picture on Twitter. Meanwhile, JWoww and Roger consider the future of their relationship.

The ladies get a taste of motherhood when they care for two pretend babies. Later, Snooki finds out if she's having a boy or a girl.

Jionni and Snooki, proud parents to be, prepare themselves for the future and have a baby shower. JWoww starts to become accustomed to living with Roger.

JWoww attempts to throw Roger hints that it's time for him to propose while Snooki is unable to cope with her pregnancy.

Snooki ends up going into early labor. JWoww is embarrassed after her father tries to makes a pass at her friends at a family barbecue.

Jenni and Roger head up north to visit Roger's family in Maine. Snooki and Jionni are putting their new baby knowledge to the test as they adjust to life as new parents.