The Someone Like You hitmaker's records 19 and 21 were both autobiographical and she famously got inspiration for her tunes by writing about the ups and downs of her love life.
The 23 year-old has revealed she has since suffered heartbreak, but has vowed not to document the failed romance in a future album.
Speaking on British TV programme The Jonathan Ross Show, she said: 'I got a bit burnt back in May and I know he would be over the moon if I wrote a record about him. But no way is that boy getting a record about him. No way.'