"I Think I'm in Love with You" is a song written and produced by Cory Rooney and Dan Shea for Jessica Simpson's 1999 debut album, Sweet Kisses.

Simpson recorded a Spanish version of the song titled "Tal vez es amor".

In the United States, the single debuted at number 63 on the Billboard Hot 100, on the issue dated July 1, 2000.

[5] The single reached number five on Billboard Pop Songs and stayed on chart for 22 weeks.

The song also reached number two on the Canada RPM singles chart and was her highest peak at the time.

[9] It was later certified gold by the Australian Recording Industry Association (ARIA), denoting shipments of 35,000 units within the country.

"I Think I'm in Love with You" peaked at number 31 on the European Hot 100 Singles chart, as compiled by Billboard.

The video starts out with Jessica and her girlfriends, including her sister, Ashlee, running into a group of factory workers unloading furniture from a truck.

Simpson performed the song at the Wango Tango concert organized by KISS-FM on May 13, 2000.

[20] On November 23, 2000, Simpson performed the song on The Salvation Army's National Kettle Kick-off half-time show.