The 34-year-old singer got married to Lauren in a Southern California style wedding yesterday, reported People magazine.
The 'I Want It That Way' hitmaker had earlier said that he would never get married but changed his mind when his bandmate Howie Dorough convinced him to go ahead with the proposal.
"I asked Howie for advice. I was like, 'I love her, and I don't want to lose her.' And he was like, 'Just do it!'," he said.
Nick's other bandmate A J McLean attended his pre-wedding dinner party.