While promoting the season 2 premiere of NBC's a cappella vocal competition 'The Sing-Off,' series host Nick Lachey, 37, opened up about his upcoming nuptials to fiancee Vanessa Minnillo, 30.

"I want it to be about her," the former boy band singer told PEOPLE. "Any guy will tell you that it's probably more about the bride than the groom. It's just about celebrating your love for each other."

He added, "She's my soulmate in every way....She gets me, I get her....She's a great girl....incredibly intelligent, incredibly personable. She's independent, yet supportive. I'm extremely happy that she's mine."