The music video premiered on March 25, 2008 on Yahoo! Music. Kristin Cavallari can be seen in the video, playing his love interest. The video begins with the shopping mall closing then Kristin while hiding under a register desk receives a text message saying "I'm Here XOXO" opening the door to her mysterious boyfriend who was hidden under a hood and starts playing around the mall while videotaping it while avoiding getting captured by a security guard who's doing the night shift at the end she takes off the hood off her boyfriend and it revealed it was Gavin and it ends them leaving out of the mall. During some scenes Gavin is playing the piano while his band perform in a green room with a chandelier in the top.
The song received many positive reactions. Katie Hasty from Billboard commented: ""In Love With a Girl" opens with heavily distorted guitars as minor chords roll through, but be not deceived: Lyrically, the track is happy, with the 30-year-old songwriter heralding a girl that "understands." One flaw beleaguers DeGraw's normally dependable croon: the unnecessary presence of auto-tuning, which is mightily distracting. Beyond that, "Girl" is a rocking home run in the same ballpark as "I Don't Want to Be." The chorus is buoyant, backed with idyllic drum tracks alongside, driving each word-heavy verse, as DeGraw's snappy piano lines may have fans playing, heaven forbid, air piano."
Singer/songwriter Gavin DeGraw grew up playing music at home with piano studies beginning at eight and later playing in cover bands with his older brother in upstate New York. After a brief stint studying music at the prestigious Berklee School of Music, DeGraw, who had been writing his own songs since his cover band days, decided to make a go of it as a singer/songwriter in New York City. Upon his arrival in the late '90s, DeGraw made an impression with crowds, and occasionally with journalists, as his name began to pop up in columns and best-of lists. The steady buzz led to offers from major labels, but DeGraw chose to take his time, and let his craft develop and his audience grow. He eventually signed a record deal with Clive Davis and his J Records imprint (home of Santana as well as R&B mainstays Alicia Keys and Angie Stone). DeGraw's debut, Chariot, arrived in the summer of 2003 and, like his early days in New York City, it slowly built momentum and earned the young singer a small but fervent following. By 2004, its first single, "I Don't Wanna Be," had become a Top 40 number one hit, and the album was re-released in a form that augmented the original album with a made-over acoustic version, billed as Chariot -- Stripped. DeGraw's next single, "Chariot," was also met with positive response and climbed the charts in 2005. ~ Wade Kergan, All Music Guide