Brooks posted never-before-seen photos of the couple to celebrate Yearwood's birthday.
The pictures spanned their nearly 20-year relationship.
Brooks called Yearwood "the Queen" in a loving birthday message.
Photos included the couple hugging, kissing, and laughing together.
One shot showed them cozying up in coordinating cowboy hats.
Another featured Yearwood elegantly posing in a black gown.
There were also candids of them performing on stage together.
Brooks said Yearwood makes him smile every day they are together.
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