Nick Cannon claims he isn't trying to get attention by praising Mariah Carey.

Nick Cannon

Nick Cannon

The 'America's Got Talent' host, who split from the '#Beautiful' hitmaker last summer after six years of marriage, recently praised her for being a "wonderful and nurturing" mother to their four-year-old twins Moroccan and Monroe, and insists he had no ulterior motives.

Asked about his gushing Mother's Day message, he told E! News at the NBCU Cable Upfront red carpet in New York: "Obviously I didn't do it to kind of get any acknowledgement or anything. It was the truth. She's an amazing mother, she's an amazing person. We all know that, the world knows that Mariah's amazing."

In the touching post earlier this month, Nick, 34, wrote: "Gotta represent for the Mother of my children. She is such a wonderful, thoughtful, festive, loving and nurturing Soul. I will forever be in debt to you for blessing me and the rest of the world with Roc & Roe.

"A true #Queen. Will love you always @MariahCarey #HappyMothersDay (sic)."

The former couple recently sparked rumours they are trying to rebuild their marriage after Nick described his estranged spouse as the "love of his life".

Asked if he would consider reuniting with her, he said: "It's one of those things, I'm a hopeless romantic too. Through this learning process, you never say never.

"To me one thing I know, that will always be the love of my life, always be my family and that's never going to change."