“Our center…. She is my wife, she is the mother of my girls,” McGraw wrote, captioning a sunny snapshot of his wife. “She is my best friend, my lover, my tether in the storms, I love her, I love her, I love her.”
“Happy birthday baby,” he said.
The country couple have been married since 1996 and have three daughters together.
See McGraw’s loving birthday message to Hill, who turns 52 this year, below.