Jersey Shore, A House Divided

Leftover tension from Miami spills over to Seaside when unresolved issues among the girls explode on the first night. And new roommate Deena gets naked in front of The Situation! (S3, ep1)

The first night's fight causes tension in the house. Ronnie and Sammi keep isolating themselves, but things really explode when Ronnie decides to chill with the other housemates. (S3, ep2)

Sammi decides to make peace with Snooki and Deena. JWOWW runs into her old flame Roger and sparks fly. Meanwhile, Snooki gets arrested for public intoxication. (S3, ep3)

After Snooki is arrested, she becomes depressed... until she meets a new guy. Denna meets Ronnie's stunt double. Meanwhile, JWOWW's relationship with Tom comes to a dramatic end. (S3, ep4)

Ronnie and JWOWW make up, leading to Sammi punching Ronnie in the face. Vinny picks up a girl with an overbearing family, and The Situation learns Deena's dirty little secret. (S3, ep5)

Ronnie's over-drinking causes some painful side effects, Snooki meets a guy who may or may not be engaged, and Pauly D makes peace with an old nemesis. (S3, ep6)

Ronnie and Sammi's tumultuous relationship finally comes to an end, but when Ronnie destroys everything Sammi owns, she must decide whether or not to leave the Shore. (S3, ep7)

Ronnie feels like he has no friends left at the Shore after Sammi leaves and the housemates aren't sympathetic to him. Meanwhile, Mike tries to hook up with Pauly's ex-girlfriend! (S3, ep8)

Snooki's summer of hookups comes back to haunt her, and Mike pulls a big prank on Deena and Snooki... but the rest of the guys have the last laugh, leaving for dinner without him. (S3, ep9)

Sammi returns to the house and Ronnie is speechless. Snooki's feelings for Vinny continue to grow. Mike hooks up with a girl who he says smells like cheese, but is it just a prank? (S3, ep10)

Vinny and Pauly take a road trip to Staten Island, Jenni fears Roger's more than a rebound, and Mike reveals Sammi's shady ways, making Ronnie question his love. (S3, ep11)

Mike keeps instigating drama between Ron and Sammi, Snooki falls out with Vinny. Deena gets upset at Pauly and Vin for trying to hook up with her friend at the end-of-summer party. (S3, ep12)

While one couple reaches a crossroads in their relationship, another couple makes it official. The roommates say goodbye to another summer at the Jersey Shore. (S3, ep13)