The 35-year-old actor started dating the singer five years ago after they met on the set of her music video, "You and I." They got engaged on Valentine's Day last year. "It was so special," Gaga told ET a few weeks after the proposal
. "It was actually funny, he first gave me a Ring Pop – a candy Ring Pop – and I was crying so hard, and I said yes right away, and then he pulled out the heart-shaped diamond and I said, 'Oh, God!'"