In the season finale Snooki and JWoww swap boyfriends for the night and the girls have to decide if they want to stay in Jersey City or move home with their boyfriends.

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.

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 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 JWoww head to Cancun, hoping to let loose, but Snooki has a hard time relaxing while pregnant. The gals bicker about late-night plans, and a fight in a club puts Snooki in an uncomfortable situation.

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.

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.

The ladies throw a housewarming party at their apartment; Snooki's "Jersey Shore" pals give her a hard time for being pregnant and engaged.

The girls invite their "Jersey Shore" roommates over for dinner so Snooki can share her big news. But first, a raunchy handyman nearly ruins their plans for getting the apartment ready on time.

Snooki has her first ultrasound. Later, the ladies decorate their new apartment.

The girls' boyfriends visit the apartment for the first time, and before long, a fight erupts over Jionni's bachelor party.

In the series opener, best friends Snooki and JWoww move into their own place in Jersey City, N.J., where they plan on having one last hurrah before their relationships back home get too serious, but Snooki has big news for JWoww that will change everything.

This sneak peek takes a look back at the drama and chaos that brought these two best friends closer together.