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Shelton spoke to ET's Sophie Schillaci before the couple took the stage on Monday, where he admitted that he dressed up for the occasion -- donning an uncharacteristic vest and tie -- to impress his rock star girlfriend. In fact, he said the country-tinged track itself was an effort to win her over.
"When I originally started writing this song that we're performing tonight, I was only trying to impress Gwen that time around too," the singer revealed.