"You're in Love" is a song by American pop rock band Wilson Phillips. It was written by the band with Glen Ballard, while he produced it. Released in January 1991 by SBK Records as the fourth single released from the group's self-titled debut album (1990), it reached number one on the US Billboard Hot 100, becoming the group's third and final number-one single in the United States. At the 34th Annual Grammy Awards, it received a nomination for Best Pop Vocal Performance by a Duo or Group.
"You're in Love" reached number one on the US Billboard Hot 100 for the week ending April 20, 1991; it was their third number-one hit and fourth top-five single. It also spent four weeks atop the Hot Adult Contemporary Tracks in 1991, the group's longest stay at number on this chart. In Canada, the song reached number three on the RPM 100 Hit Tracks chart and also became an adult contemporary number-one hit, spending two weeks atop the RPM 40AC chart. Outside North America, the single failed the replicate the success of the band's previous singles, reaching number 29 on the UK Singles Chart and missing the top 30 in both Belgium and the Netherlands.