Teen singer Taylor Swift refuses to stop writing lyrics about her famous ex-boyfriends - because a chart-topping song is the ultimate redemption.

The 18-year-old country music star has admitted much of her material is inspired by her exes, and has no plans to stop despite her recent public break-up with Joe Jonas.

She says, "I love writing about past relationships because it justifies them. If I dated somebody and it didn't work out and it hurt, and I write a song that goes top 10 because of it - that relationship was totally worth it."

But Swift admits she's still stunned at how her young fans relate to her heartbreak.

She adds, "You don't imagine when you're writing a song in your living room that it's going to go out in the world and affect somebody you've never met."