It’s all over between Charlize Theron and Sean Penn. The couple has reportedly called off their engagement after being together for over a year. Sources told Us Weekly Wednesday that it was 39-year-old Theron who called it quits with 54-year-old Penn.

Neither Theron nor Penn confirmed the reports.

The Oscar-winning couple, who began dating in late 2013, was seen together at the Cannes Film Festival in southern France last month.

The two, who have known each other for years, reportedly got engaged last December. Theron, who is currently basking in the success of “Mad Max: Fury Road,” told Vogue at the time how she entered into a relationship with Penn. “I really didn’t see it coming. Sean and I have known each other for 18 years. We were just really good friends. It was effortless and kind of naturally happened, and before I knew it, I was in something that was making my life better,” she said.

What drove Theron and Penn to end their relationship is still a mystery. However, most recently, in a candid interview with Elle UK magazine for its June 2015 issue, Theron discussed about her experience of working alongside Penn in the upcoming drama, “The Last Face.”

“Putting aside that he’s my partner, he’s the love of my life; for the first time, I felt that my work was really bleeding into my life and that made it hard. There were moments where I was incredibly unfair to him. And moments where I felt like … he was incredibly unfair to me. But it makes you realize that no matter how complicated it gets, the priority is the relationship,” she said.

In the past, both Theron and Penn have had high-profile relationships. Penn was married to singer Madonna for four years, and to actress Ron Wright, again for four years. Theron dated Irish star Stuart Townsend and Third Eye Blind musician Stephan Jenkins.