Alongside pictures of the pair together from throughout their relationship, she said: “15 years. Proud of us babe. See, sometimes being stubborn pays off.
“What a wild ride it’s been, once we learned how to stay in our race line. Here’s to at least the next 15 months hahahAh. I love you and I love our family.”
Pink proposed to Hart in 2005 during a motocross race.
They separated in 2008, two years after walking down the aisle in Costa Rica. They later reunited and welcomed a daughter, Willow Sage, in 2011.
Son Jameson Moon arrived in 2016. Hart, 45, also shared a post to mark the anniversary.
He said: “15 years w/ this amazing woman! Damn, baby!!!!! There is no other woman that I would want to go through this crazy world with than you. Thanks for being a great friend, wife, mother, and person.”
Singer Pink celebrates 15 years of marriage to Carey Hart