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Why was Nick Cannon sans wife Mariah Carey at the NYC premiere of Just Wright on Tuesday?

"Oh, she had to work and make that money, so I'm here hanging out tonight," he told (Cannon, 29, host of NBC's America's Got Talent, previously told Us he doesn't mind the "Mr. Carey" label.)

Over the weekend, the two renewed their vows.

He said fun ceremonies like that keep that spark in their relationship.

"We're not taking life way too seriously," he told Us. "We're out there having a good time and embracing each other and being friends and keeping a sense of humor about everything."

Indeed: Cannon gave Carey, 41, a custom-made "Ring Pop" as a surprise gift during their renewal ceremony. It was made of white gold encrusted in white diamonds and pink sapphires.

"When I first proposed to my wife, I did it with real ring pops," he explained. "I had a ring pop wrapper and opened it and was like, 'Look, baby, our favorite candy!' She had hers and she was like, 'Mine is broken.' She opened it up and it was her real engagement ring. So I'm a romantic guy!"

He added, "Every 30th of every single month is 'I Love You Day.' We celebrate the 30th because that's when we got married."

They celebrate "I Love You Day" with "flowers, candy, dinner, gifts," he told Us. "We just like to remind each other how we feel."