Viewers of the MTV show watched the couple experience ups and downs across the duration of the series, but they always ended up back in each other's arms.
But now it seems that isn't the case.
Ronnie told People magazine that he and Sammi had split around two months ago as they hadn't been spending much time together and had started to drift apart.
He said: "I still care about her. She's a great girl, but we were growing distant. It was for the best."
Sammi added to E! News: "I wish him nothing but the best. Right now, I'm focused on myself."
Will they remain apart, though? Fans of Jersey Shore know these two had a tendency to fight, break up and then make up. We guess time will tell...
Ronnie, 28, and Sammi, 27, were main castmembers on Jersey Shore which ran from 2009 until 2012. They were reportedy living together before their break up.
Earlier this week, Ronnie caught up with another former Shore co-star, Jenni 'Jwoww' Farley, attending the premiere of her movie Jersey Shore Massacre and meeting her baby daughter Meilani.
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