Prince Constantine-Alexios of Greece Girlfriend 2025: Dating Madelyn Cline After Brooks Nader Split?

In the world of modern European royalty, the love life of Prince Constantine-Alexios of Greece is a popular topic. Recently, in September 2025, he was seen in New York City with American actress Madelyn Cline. They showed affection in public at fancy places, which has led people to believe they are in a new relationship.

These new sightings come after the prince's very public breakup with model Brooks Nader in mid-2024. He seems to have a pattern of dating people who mix royal history with Hollywood fame. This story is not just gossip; it also makes us think about the role of royals who no longer have a throne. Using confirmed reports, this article looks at the prince's life and past relationships to see if Madelyn Cline is a major new part of his story.

Prince Constantine-Alexios's Dating History

Looking at the prince's love life since 2022, we see a blend of royal blood and modern fame. Because he's private, the public only learns about his relationships through paparazzi pictures and online hints. This gives us a peek into his world. According to confirmed reports, he has moved from dating people in London's social scene to famous Americans, always choosing women who are polished and have their own careers.

The liaison began amid whispers at London's Chiltern Firehouse, with Delevingne, 39, fresh from her 2022 separation from James Cook. Spotted strolling in February 2023, the 12-year age gap drew scrutiny, yet family endorsements via shared Wimbledon appearances with sister Maria-Olympia signaled approval. Their split, rumored by early 2023, was amicable, attributed to diverging schedules.

Post-Delevingne, Constantine-Alexios attended Olivia Culpo's Rhode Island wedding with Sports Illustrated cover girl Brooks Nader, 27, fresh from her May 2024 divorce. NYC PDA on June 27, 2024, confirmed the fling: arm-in-arm strolls in coordinated whites. Lasting mere months, it ended amid Nader's subsequent links to tennis stars Carlos Alcaraz and Jannik Sinner, highlighting the transient nature of such unions.

Fleeting mentions include 2023 Instagram "soft launches" with unnamed European socialites and a 2022 yacht sighting with a Miller family acquaintance. These vignettes, per Deuxmoi tips, underscore a pattern of privacy breached by digital sleuthing.

Is Madelyn Cline the New Girlfriend?

As of September 29, 2025, Constantine-Alexios and Madelyn Cline, 27, dominate discourse following multiple NYC encounters. On September 20, eyewitnesses tipped Deuxmoi to a Madison Avenue hand-holding stroll giggling in sweats, per reports followed by a September 23 Lions Bar rendezvous. Videos capture a kiss, with Cline's distinctive AirPod Max headphones linking to her September 6 TikTok. Constantine-Alexios's September 22 Instagram Story a silhouetted back view fueled "soft launch" theories, while mutual follows amplify speculation. Neither has confirmed, aligning with his privacy ethos; a Cline representative declined comment.

What Madelyn Cline Brings to the Royal Romance

Cline, a South Carolina native risen via Outer Banks (2019–present), infuses the pairing with transatlantic allure akin to Meghan Markle's Windsor entry. Her post-Knives Out trajectory I Know What You Did Last Summer (2025) mirrors Constantine-Alexios's artistic pivot, fostering intellectual synergy. As a philanthropist via anti-trafficking initiatives, she complements the family's foundations, potentially elevating their joint profile. For royal analysts, this echoes historical Anglo-American unions, blending Hollywood narrative with Glücksburg gravitas.

Alexios Remains One of the World's Most Eligible Bachelors

At 25, Constantine-Alexios's allure endures: titular heir to a storied house, artistically inclined, and socially adroit. His romances, from Delevingne's bohemia to Cline's stardom, signal versatility unbound by protocol. In an era of Windsors' scandals, his discretion positions him as a stabilizing archetype poised for legacy-building, whether through canvas or companionship.