The country singer has dated Joe Jonas, Taylor Lautner, and Glee's Cory Monteith. She said that all her exes end up immortalised in music.
She told US Weekly, 'Every person I've fallen for - they've all been a song. That kind of justifies them being in my life.'
Rumoured ex John Mayer is thought to be the subject of the 20-year-old's track Dear John on her forthcoming album Speak Now.
Although she hasn't confirmed that it is about the 33-year-old. The singer said that some men are scared off from her in case they end up in a song.
'Guys will say something like, 'Oh, I'd better never make you mad because you'd write something about it.' Or, 'I don't want to be one of those guys,'' she said.