Grey's Anatomy Star Kate Walsh Engaged!

Grey's Anatomy star Kate Walsh exclusively tells Usmagazine.com that she and her 36-year-old Fox studio executive boyfriend, Alex Young, are engaged.

Walsh, 39, revealed the surprising news to Us during the ABC upfront presentation at New York's Lincoln Center on Tuesday. "It happened a few days ago. And that’s all I can say," she beamed, flashing Us her engagement ring. "I’m on cloud nine.”

The news didn't exactly come as a shock to at least one of her castmates.

"I'm upset because she didn't consult me first!" Walsh's new costar, Tim Daly, tells Us jokingly.

The couple were first spotted getting cozy on April 26 at Mustard Seed Restaurant in Hollywood. “They were holding hands, nuzzling each others necks, kissing, and were really into each other," a source tells Us.