About In Case You Didn't Know

"In Case You Didn't Know" is a song recorded by American country pop singer Brett Young and co-written by Young, Trent Tomlinson, Tyler Reeve, and Kyle Schlienger. It was released to radio on January 9, 2017 as the second single from his debut self-titled album (2017). The song has been certified 3× Platinum by the RIAA, the first song by Brett Young to receive a Platinum certification. The song was written in 2016 during a working trip to Puerto Vallarta, Mexico. Young co-wrote the song at the retreat with Tyler Reeve, Kyle Schlienger, and Trent Tomlinson. According to Young, the inspiration for the song came from a story told by Peters about his wife Brandy: "[Peters] said when he was a kid, his mom would not be the type to say "I love you" but he seemed to always know it in some way. Peters married his wife in March 1998 and he wanted to show his love for her by co writing this song." In 2017, Young released a duet version of the song with Irish singer Una Healy.

The song first entered on Billboard's Hot Country Songs chart at number 45 for the week of August 6, 2016 after it was featured on The Highway in July 2016, selling 9,000 copies that week. It also peaked at number two for a record of 16 consecutive weeks but it was kept out of the top spot by "Body Like a Back Road" by Sam Hunt. The song debuted on the Country Airplay chart at number 52 for the week of December 24, 2016 before its official release in January 2017. It peaked at number one for the week of June 10, 2017, making it Young's first number one hit of his career. The song reached over a million in actual sales by January 2018. On April 11, 2019, the single was certified quadruple platinum by the Recording Industry Association of America (RIAA) for over 4 million combined sales and stream units in the United States. It has sold 1,263,000 copies in the United States as of November 2019.