"Relentless" is a song written by James LeBlanc and John Paul White and recorded by American country music artist Jason Aldean. It was released in May 2008 as the third and final single from his 2007 album of the same name. The song peaked at number 15 on the Billboard Hot Country Songs in late 2008.

"Relentless" is a mid-tempo in which the narrator describes his lover as being relentless in nature ("I can't outrun it / Just keeps comin' / Girl, your love is relentless"). He compares her to a daydream, crashing waves, and a storm.

Leeann Ward, reviewing the song for Country Universe, gave it a B- rating. She described the verses as having "somewhat murky" lyrics, although she added that they "are liable to get stuck in your head."

The music video was directed by Ryan Smith, and aired in June 2008. The video takes place at a motel with Jason Aldean and his band featured in the motel room in some scenes, and in some scenes, Jason Aldean and his band is performing on the parking lot.

"Relentless" debuted at number 54 on the U.S. Billboard Hot Country Songs for the week of May 10, 2008. The song peaked at number 15 on the Billboard Hot Country Songs charts, becoming the first single of Aldean's career to miss the top ten. Also, it is his first not to enter the Billboard Hot 100, but it did peak at number 3 on the Bubbling Under Hot 100 (equivalent to number 103 on the Hot 100).

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