Swift's father 'in warning to One Direction star'

Taylor Swift's father has reportedly warned her boyfriend Harry Styles not to break his daughter's heart.

Scott Kingsley Swift wants the couple to "slow down" because he is concerned about the 23-year-old beauty - who has had failed relationships with a string of big stars including Jake Gyllenhaal, Joe Jonas and John Mayer - being left "devastated" if the pair split.