Who Is 'I Knew You Were Trouble' Written About? Lyrics Explained

Taylor Swift fans have some theories as to who "I Knew You Were Trouble" is written about — but which ex is the subject of one of her most popular songs? Keep reading!

All the Taylor Swift Songs That Are About John Mayer

Taylor Swift: the hidden meaning in 1989's album notes – and an Aphex Twin mashup, Taylor Swift

Every Song Taylor Swift Has Supposedly Written About Ex John Mayer

I Knew You Were Trouble - Lyrics

Video Review – Taylor Swift's “I Knew You Were Trouble” - Saving Country Music

Red (Taylor's Version)': Guide to Every Song on Taylor Swift's Album

Are Taylor Swift's 'Question?' Lyrics About Harry Styles? - Song Meaning

Ranking Taylor Swift's All-Time Best Live Performances - The Ringer

Better Than Revenge': Should Taylor Swift Alter Problematic Song in Re-Recording?