The country music star shared a touching photo of himself and the Oscar winner on the beach together, both smiling as he wraps he arms around her. Alongside he wrote: "Thirteen years of magic, music, romance, wild adventures, and the ongoing discovery of pure love. Happy Anniversary Babygirl. xxxx - KU."
Also showcased in the photo is the 51-year-old singer’s upper-arm tattoo, which features an ornate design around his wife’s name.
Check out the crooner's sweet message for his wife in the post below.
"Normally I can step back into my family life in a very easy way. I mean, not always, but you know, usually. I've been working a long time now," she said. "But it was hard."
"Luckily, I have a partner who is artistic, so he understands what it takes to support that," she added. "[He] would hold me, and I was really upset at times. Really damaged and really upset and physically and emotionally drained and in pain... Luckily, I have that at home and I also have people I can talk to and get it out."