Mckenna Grace and Mason Thames’s Full Relationship Timeline

The burgeoning romance between young Hollywood stars McKenna Grace and Mason Thames has captivated pop culture fans following a relationship timeline that evolved from on-screen chemistry to a public romance. McKenna Grace, 19, known for her work in The Handmaid’s Tale, and Mason Thames, 18, star of How to Train Your Dragon, first crossed paths professionally as love interests in the film adaptation of Colleen Hoover’s Regretting You, according to reporting by Elle.

What began as professional collaboration quickly sparked widespread fan speculation across social media platforms.

From On-Screen Co-Stars to Public Sightings

The public introduction of the two actors as a creative pair occurred in August 2024, when Grace and Thames made their first joint public appearance at Netflix’s Incoming House Party event. At the time, industry announcements confirmed they would star together in the screen adaptation of Colleen Hoover’s novel Regretting You, establishing the professional foundation for their future interactions.

Speculation surrounding an off-screen relationship intensified significantly in April 2025. On April 7, Grace posted a TikTok video featuring herself and Thames lip-syncing to audio from the film 500 Days of Summer. The clip concluded with the two leaning in for a playful staged kiss before dropping out of frame, triggering immediate speculation among followers regarding whether the video served as a subtle confirmation of a real-life relationship or purely promotional content for their upcoming movie.

Days later, on April 18, 2025, the pair were spotted together attending a Miami Heat versus Atlanta Hawks NBA game at State Farm Arena, further fueling media attention. By May 2025, Grace shared an Instagram carousel that included a photograph of herself and Thames, captioned with playful emojis, according to Elle.

Addressing the Rumors and Spending Time Off Set

As public interest mounted, Thames addressed the viral TikTok video in a June 2025 interview with Seventeen, explaining that the video was Grace’s suggestion and noting that he was surprised by the intense online reaction from friends and fans. While stopping short of confirming a romance at that time, Thames spoke warmly about his co-star, telling Seventeen, “She is one of the most driven people I’ve ever met in my life. Every day I’m on set with her, I just want to be as good as Mckenna. She’s such a sweet person, and getting to do this movie with her is so cool.”

Thames also discussed navigating unexpected public scrutiny, noting that he had traditionally kept a low profile online. He shared details of their off-screen outings, including a trip to an aquarium where the two listened to a shared playlist while looking at sharks. On June 14, 2025, Grace and Thames were photographed walking hand-in-hand through SoHo in New York City, coinciding with the theatrical release of How to Train Your Dragon, which provided additional confirmation of their close bond to observers.

International Appearances and Going Instagram Official

The couple continued to make joint public appearances later that year. On October 12, 2025, Grace and Thames traveled to Berlin for a special screening of Regretting You held at Zoo Palast, posing for photographers on the red carpet.

The relationship reached a definitive milestone in February 2026. On February 18, Thames shared a collection of photographs on Instagram from a trip to Paris, featuring multiple images of the couple together, including a photograph of them kissing in front of the Eiffel Tower. Grace responded in the comments section of the post, cementing their status as a public couple and delighting supporters worldwide.