Will Arnett and Carolyn Murphy are newly dating, PEOPLE can report.

The actor and Smartless podcast co-host quietly split from Alessandra Brawn , his girlfriend of five years, in late 2024, PEOPLE also confirms. The former couple share 5-year-old son Denny and "remain committed co-parents," says a source.

Arnett, 55, and Murphy , 51, a supermodel and environmental advocate, stepped out together late last month to see Sean Hayes ' play, Good Night, Oscar , on London's West End. The two appear smiling alongside Hayes and his husband Scott Icenogle backstage in an Instagram photo posted by Hayes with the caption: "Another recent surprise visit from one of the greats. Love you, Willie. ❤️ #GoodNightOscar"

A rep for Arnett did not immediately return a request for comment

See Full Page