After being married for almost two decades, Tim McGraw is still captivated by his wife Faith Hill's beauty, and his reaction to seeing her in her 2014 ACMs dress is pretty much the sweetest thing.

The singer shared his thoughts about his wife on Twitter, saying, "Great fun singing with my wife last night!!!!! Seeing Faith walk out in that dress for the 1st time took my breath away. Hard to recover."

The couple sang McGraw's newest song 'Meanwhile Back at Mama's' at the ACM Awards on Sunday (April 6), and while the 'Highway Don't Care' singer looked spiffy in a black tuxedo, his wife absolutely stunned in a champagne floor-length Versace gown that shimmered under the spotlight. She certainly took the breath away of viewers, too, embodying an ageless beauty that truly shines.

It's rare to hear about such a strong, lasting marriage in the entertainment industry, but McGraw and Hill seem to have it figured out -- and they attribute it to genuinely liking one another, as well as a commitment to simply walking through life together. Plus, McGraw makes sure to keep the flame lit by surprising his wife every once in a while.

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