Ronnie Magro and Sammi Giancola Credit: Michael N. Todaro/Getty Images

Back on — again! Jersey Shore alums Sammi “Sweetheart” Giancola and Ronnie Ortiz-Magro are back together, a source confirms to Us Weekly.

According to the insider, the pair are newly dating again and are not seeing other people. “Both Sammi and Ronnie are telling friends they have never loved anyone else since they broke up,” the insider tells Us.

The couple celebrated Giancola’s 29th birthday together on Saturday, March 12, at Bounce Sporting Club in New York City. “Such an amazing Birthday Weekend spent at my fav. Place @bouncesportingclub @thecbernard ! 🎉,” the birthday girl captioned a group shot on Instagram on Sunday, March 13.

Such an amazing Birthday Weekend spent at my fav. Place @bouncesportingclub @thecbernard ! 🎉

A photo posted by Samantha💟 "Sammi Sweetheart" (@sammisweetheart) on

The MTV reality stars have been dating on and off since first meeting in 2009. Their volatile breakups and makeups were documented on the hit reality series until the season 6 finale aired in December 2012.

In August 2014, Magro, 30, told Us that they had split again, but that there was no love lost.

"We just grew our separate ways," he explained at the time. "She's still a great person. I love her as a person and I care about her but we went our separate ways. That's it. … At the end of the day, we went through a lot of stuff together. We have a lot of history so I keep her close."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics, and more delivered straight to your inbox!