Lady Gaga Engaged to Chicago Fire Star Taylor Kinney

Lady Gaga is engaged to marry her boyfriend of four years, actor Taylor Kinney, the singer confirms on Instagram. The Chicago Fire star proposed Saturday with a huge heart-shaped ring.

"He gave me his heart on Valentine's Day, and I said YES!" Gaga captioned a photo of the giant rock.

| CLICK HERE FOR STARS ROCKING THEIR ENGAGEMENT RINGS |

The couple later celebrated the news at Gaga’s family's restaurant, Joanne Trattoria, on the Upper West Side of Manhattan.

The two first met on the Nebraska set of Gaga's "You & I" music video in 2011. They started dating several months later, split briefly in May 2012, and got back together the following month.

The low-key pair, who rarely speak out about their relationship, were rumored to have held a commitment ceremony last October.

Congratulations to Gaga and her fiancé!

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(Photo: PBG/Empics Entertainment/PA Photos/Landov)