Brantley Gilbert wrote an emotional post to his wife, Amber, on their four-year wedding anniversary Friday (June 28).

Gilbert shared an image of the couple on their wedding day with the date engraved into the photo book. "I’ve been spending time with the amazing woman God blessed me with and the amazing little boy he blessed us with," he wrote in the accompanying post.

Gilbert is referring to their first child, 19-month-old Barrett Hardy-Clay. Barrett is the name the couple fell in love with, Clay pays tribute to Gilbert's late grandfather, and Hardy is Amber's family name. The happy couple is now expecting their second child, a girl!

"[I] just wanted to share this before the day is officially over," Gilbert continued. "This book is filled with pictures of the day I made the best decision of my life.... It’s hard to believe it’s been four years.... Amber, I’m so thankful for you, our growing family, the ups and the downs, and all the crazy things that make us us. We’ve got many more years to come and I know I’m blessed to have you to share them with.... I love you."

Gilbert met Amber in his hometown where she was a schoolteacher; in fact, he's known her for more than 10 years. Gilbert claimed that he knew she was the "one that got away" years ago. The pair got engaged in October of 2014 and planned for a wedding around Amber's teaching schedule in June of the next year.

"She’s always had a very, very, very big piece of my heart, and I think that had a lot to do with why I never could give a lot of myself away," Gilbert told The Boot. "With her, she’s my best friend, too, so finally having somebody to actually share all of this with and somebody that knows me very well, that I can vent to and that can vent to me."

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