"She's in Love with the Boy" is a song written by Jon Ims and recorded by American country music artist Trisha Yearwood. It was released in March 1991 as the lead single from her self-titled debut album. The song reached number one on the Billboard U.S. Hot Country Singles & Tracks chart and was the first of five number ones on the country chart for Trisha Yearwood.

The song is a ballad about a teenage couple named Katie and Tommy in a small town becoming betrothed. Katie's father does not approve of their relationship ("Her Daddy says he ain't worth a lick / when it comes to brains he got the short end of the stick") and after the couple returns home late after a date, he angrily confronts them; but Katie's mother comes to their defense, pointing out to Katie's father that they were no different from Katie and Tommy when they were teenagers and how her own father didn't approve of the relationship, but she married him anyway and that Katie will do the same with Tommy ("he was wrong and honey you are too / Katie looks at Tommy like I still look at you").

The music video was directed by Marc Ball and premiered in early 1991. It takes place on a farm and it shows some farm animals moving to the music and it shows shots of a pre-teen couple, a young adult couple, and an elderly couple, along with Trisha sitting on a stool singing.

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