The couple have been married since 2006 before a brief split, and then reconciled in 2010 and welcoming their daughter that same year.
Pink opened up about motherhood and hinted at expanding her family back in May.
“I love being a mama. I made a choice a long time ago that I was going to have a successful family and that is my absolute number one goal in life,” she told Good Morning America.
“I feel like I have two kids right now. I would like a third. No, I want to say that Carey Hart’s an awesome husband and a really good dad, but he’s also like a second child.”