The "Sexy Back" singer, 31, popped the question with a vintage-style, six-carat engagement ring, which he designed, over the holidays in December 2011. (Us broke the news in January.) Said a source of why the spot is special for the couple: "Justin knows how much she loves snowboarding and the mountains, so it was the perfect place."
It has been a long road to the altar for the longtime loves, who have dated off and on for nearly five years. But after a brief three-month split in 2011, Biel made it clear that she wanted to spend her life with Timberlake "When they reunited, they had a conversation about taking the next step," the insider added.