Singer and host of Sing-Off Nick Lachey and model/actress Vanessa Minnillo are engaged. "We're excited and incredibly happy about our engagement and we look forward to a wonderful future together," the couple told Us Weekly. The two started dating in 2006, after Lachey and Jessica Simpson divorced. Lachey reportedly gave Minnillo a platinum, Asscher-cut diamond with trapezoids on the side from Bader & Garrin. The couple say they aren’t planning on making a reality-TV show about their marriage, as Lachey did with his marriage to Simpson in MTV’s Newlyweds: Nick and Jessica.