"I would love to be there when the time comes," Timmons, who performed with Lachey in the boy band, 98 Degrees, tells RumorFix exclusively.
Timmons, who just accepted a gig to perform at Chippendales in Las Vegas, says, "I've known Nick and Vanessa for a long time ... I got to see their synergy and what their relationship was like last summer and fall -- I just think they're incredible and I think they're going to make a great couple."
The 30-year-old is "just a beauty and a wonderful person to be around," he says.
When Nick and Jessica Simpson wed on October 26, 2002, 98 Degrees performed, but will the group reunite to perform this time around?
"I think it would be cool," Timmons says, "but I think sometimes you want to separate business from personal and I could see how he maybe would not want that to happen."