HOLLYWOOD - Grey's Anatomy star Kate Walsh is engaged to boyfriend Alex Young after a whirlwind romance.

Young, the co-president of production at movie giants 20th Century Fox, proposed to the actress, 39, last week in San Francisco, California, presenting her with a Neil Lane Jubilee-cut diamond ring.

Walsh gushes, "He's the most amazing man I ever met."

The news of her impending marriage comes shortly after ABC announced Walsh is to star in her own spin-off of the hit medical drama, with her character Dr. Addison Montgomery-Shepherd fronting Private Practice.

The show is also set to star Lisa Kudrow, Taye Diggs and Tim Daly.

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