Motorcycle racer Carey accompanied his songstress wife to the prestigious ceremony in Los Angeles and watched with pride as she posed for photos on the red carpet and performed on the evening to the star-studded audience.
And given that Pink looked so stunning in her figure hugging red gown, we can see why Carey felt like the luckiest man in the room.
Posting a picture on Instagram of his other half arriving at the Staples Centre in her glamorous outfit, Carey wrote: "Boom!!!! Wifey looking smoking hot on the red carpet at the Grammys".
The 38-year-old - who was kitted out in a smart suit for the night - also commented on Pink's impressive performance, claiming that it was "on point".
Taking to the sky, Pink was seen delivering an emotional rendition of her hit track 'Try' on Sunday evening, while flaunting her killer physique in a barely there number and showing off her acrobatic skills.
And did we mention that she was hanging from the ceiling by two pieces of rope?! Fearless!
Carey tweeted soon after: "Contracts to my beautiful wife @pink on an amazing year!!! Best performance of the night yet overlooked for the award. #underdog #GRAMMYs".
Pink was nominated for two gongs at the Grammys: Song of the Year and Best Pop Duo/Group Performance.
However, she ended up losing to 17-year-old Lorde and her popular track 'Royals' and hit makers Daft Punk who bagged an award for 'Get Lucky' featuring Pharrell.
Carey didn't seem to mind though and added: "You are the best baby, and I couldn't be more proud of you!!!!!!"
The loved-up twosome married in Costa Rica in 2006. They separated in 2008, but got back together the following year and welcomed their first child, Willow Sage, into the world in 2011.
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Check out all of the Grammy's red carpet stunners in our gallery below.
Copyright: WENN Adriana M. Barraza