"I Think I'm in Love with You" is a song written and produced by Cory Rooney and Dan Shea for Jessica Simpson's debut album Sweet Kisses (1999). It contains a sample of singer-songwriter John Mellencamp's "Jack & Diane" (1982) and was released as the album's third and final single in summer 2000 (see 2000 in music). The song's protagonist declares "Boy I think that I'm in love with you, got me doin' silly things when it comes to you". The single peaked at #10 in Australia and in the top 20 in Canada, the UK and New Zealand. In the United States, it reached #21.