Jersey Shore stars Ronnie Ortiz-Magro and Sammi "Sweetheart" Giancola's rocky relationship has reportedly ended.

"They are done," a source told Us Weekly, adding there was "major tension" between the Jersey Shore stars when they promoted the show's third season which premiered last week.

News of the couple's split became public when Sammi defriended all of Ronnie's friends on Facebook, implying she wants no contact with them in the future, Entertainment Tonight reported Tuesday.

In addition, signs that the Jersey Shore pair were on the verge of breaking up were apparent when Ronnie and Sammi were "barely speaking to each other" during a Good Morning America appearance last week, according to Us.

During Jersey Shore's first two seasons, Ronnie and Sammi were constantly fighting and it turned physical at times. The couple seemingly had little trust in one another as Sammi worried Ronnie was out cheating on her and flirting with other women, while Ronnie believed Sammi often tried to make him jealous.

Ronnie grew frustrated with Sammi's frequent accusations, but Jersey Shore cameras caught Ronnie in numerous situations where he was dancing with and kissing different girls on a couple occasions.

Jersey Shore stars Nicole "Snooki" Polizzi and Jenni "J-Woww" Farley eventually tried to warn Sammi of Ronnie's disloyalty via an anonymous note, but it caused more drama when Sammi's friendship with the girls faltered because she found their attempt at anonymity to be cowardly. Sammi ignored the note, and she and Ronnie continued to move forward in their rocky relationship.