Neither Dylan McDermott nor Maggie Q have confirmed the news that they're engaged, and have barely even acknowledged that they're dating-but that hasn't stopped the Stalker actress from sporting a massive diamond ring on her left hand.

Dylan McDermott & Maggie Q Spotted In Public Following Engagement Announcement

Q was spotted sporting a massive sparkler on her ring finger while out shopping in Los Angeles Thursday, which appears to look like the ring that McDermott has been rumored to have given to her recently during a Hawaiian vacation.

Rumors Q, 35, and her 53-year-old co-star on the CBS drama were engaged broke in the last few weeks, though they were reportedly engaged months ago.

Dylan McDermott & Maggie Q Make First Red Carpet Appearance

The two were confirmed to be dating back in October, after they were spotted having a romantic night at Santa Barbara's Olio e Limone.

"They were very flirty, smiling at each other, canoodling," a source said at the time. "At one point she was feeding him at the table."

The couple made a first public appearance as a couple earlier in January, when they attended the In Style Golden Globes after party on Jan. 11, which also served to be one of the first times McDermott made a public comment about being with Q.

When he was asked if any actresses in particular stood out to him at the Globes, he said, "I thought actually there were so many beautiful women there, but I think the most beautiful was Maggie Q."

Prior to their romance, McDermott was married to actress Shiva Rose for 14 years until they split in 2009. Together, they share two daughters, Colette, 18, and Charlotte, 9. Q has never been married.

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