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After staying tight-lipped, the news is official: "Chicago Fire" star Taylor Kinney and Lady Gaga are engaged.

The couple, who met on the set of the singer's 2011 video "You and I," reportedly got engaged on February 14, but waited until Monday to make an announcement. Gaga confirmed the engagement in an Instagram post, sharing a snap of her stunning (and huge) heart-shaped sparkler with the caption, "He gave me his heart on Valentine's Day, and I said YES!"

He gave me his heart on Valentine's Day, and I said YES!

A photo posted by @ladygaga on

Things seemed serious between the couple -- who started dating in 2011, briefly broke up in 2012, then reconciled a month later -- for some time. In a recent interview with Howard Stern, Gaga said she'd marry Kinney in a heartbeat.

"He is the right guy," she told the radio host. "How do we know? It's this feeling..."

Congrats to the happy couple. And good luck to Gaga lugging that giant rock around.

[via: Lady Gaga, h/t Us Weekly]

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