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Prince Albert’s daughter Jazmin Grace Grimaldi calls it quits with John Mellencamp’s nephew


After nearly a decade together, the actress and the singer Ian Mellencamp have gone their separate ways


Jazmin Grace Grimaldi and Ian Mellencamp seen outside Dear Irving Lounge on November 14, 2019 in New York City.© Bauzen
SEPTEMBER 2, 2025 10:13 AM EDT

Jazmin Grace Grimaldi, the eldest daughter of Prince Albert of Monaco, has ended her long-term relationship with singer, songwriter Ian Mellencamp, nephew of legendary musician John Mellencamp, after nine years together, Daily Mail reports.

Ian Mellencamp and Jazmin Grace Grimaldi at the 2018 Full Moon Festival at The Knockdown on June 30, 2018 in Brooklyn, New York© Steven Ferdman
Ian Mellencamp and Jazmin Grace Grimaldi at the 2018 Full Moon Festival at The Knockdown on June 30, 2018 in Brooklyn, New York

“They’ve been a huge part of each other’s lives, but it’s time to move on,” a source told the outlet. While their nearly decade-long romance once seemed steady, insiders say the relationship had stopped working as it once had. 

Fans first noticed a cooling-off on social media when Grimaldi, an actress and singer, stopped posting with her partner, even after a mysterious ring sparked speculation about a possible engagement.

Jazmin Grace Grimaldi and Ian Mellencamp posing together during their relationship© Paul Bruinooge
Jazmin Grace Grimaldi and Ian Mellencamp posing together during their relationship

The couple went public in March 2017, sharing kisses and affectionate posts on Instagram. Just a year later, Mellencamp accompanied Grimaldi to Monaco, where he met her father, Prince Albert, in the royal box at the Monte Carlo Masters tennis tournament.

Jazmin Grace Grimaldi with longtime boyfriend Ian Mellencamp in 2017© Andrew Toth
Jazmin Grace Grimaldi with longtime boyfriend Ian Mellencamp in 2017

Beyond their romance, Grimaldi and Mellencamp also collaborated musically. In 2020, they released “Thankful,” a holiday-inspired duet that they co-wrote and performed together, showcasing their genuine chemistry as artists.

Jazmin Grace Grimaldi and Ian Mellencamp at a public event© Paul Bruinooge
Ian Mellencamp and Jazmin Grace Grimaldi at the New York premiere of "Phantom Thread"

Grimaldi, daughter of Prince Albert and Tamara Rotolo, continues to pursue her career in acting and music. Mellencamp, who began his career as a model in New York, working alongside Gigi Hadid and Toni Garrn, has since built his own path in music. 

Singer Jazmin Grace Grimaldi with musician Ian Mellencamp on the red carpet© WWD
Singer Jazmin Grace Grimaldi with musician Ian Mellencamp on the red carpet

However, he has remained outside the spotlight that has long followed his uncle, John Mellencamp, a rock icon known for hits like “Jack & Diane” and a high-profile romance with actress Meg Ryan.

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