Pink and Carey Hart celebrate 6 years together

Pink and Carey Hart prove that a celebrity marriage can work. The "So What" singer and the motocross rider marked their 6-year anniversary this weekend.

"Happy anniversary to my beautiful wife who I love so much," Hart, 36, Tweeted on Saturday, according to People "Six amazing years and you haven't killed me yet. I'll love you forever." 

"Yes :) I haven't killed you yet ;)," she joked in her tweet. "But give it time darling. It's happening slowly haha. I love you honey cakes." 

Pink, whose real name is Alecia Moore, married Hart in 2006 in a beach ceremony in Costa Rica, attended by 140 guests.

Pink admitted that at her wedding she wasn't her normal tough self.

"I became traditional and annoying and emotional," Pink told the magazine. "It was really strange and interesting for both of us."

They briefly split in 2008, but eventually reconciled. The couple started a new chapter in their lives when they welcomed their daughter, Willow Sage Hart, this past summer.

"You hear people say it all the time, how life changes so drastically. But you can't possibly grasp how beautiful that is until you have your child," Pink told People after the birth of her baby, adding that Carey is a "natural" at being a father.