When it comes to beef with Taylor Swift, Camilla Belle knows best. After all, before 'Bad Blood,' there was 'Better Than Revenge.' That's right. It was long rumored that that song was written about Camilla's relationship with Joe Jonas after he broke up with Taylor back in 2008;.

In 2010, Taylor released a song called "Better Than Revenge," which was rumored to be about Camilla and her relationship with Joe:

Here's the suspicious lyric:

 “She’s not a saint / And she’s not what you think / She’s an actress, whoa / She’s better known / For the things that she does / On the mattress, whoa."

Taylor was accused of slut-shaming and behaving less Taylor-we-know-today like. Then yesterday, Camilla tweeted this:

Guess she's on team Katy.