Harry Styles and Kendall Jenner
Harry Styles had briefly dated Taylor Swift Reuters

One Direction star Harry Styles hopes American singer/songwriter Taylor Swift will not write a song about Calvin Harris. The Bad Blood hitmaker has a reputation of composing songs about former boyfriends.

"Harry knows Taylor's thing is to write about her ex-boyfriends, but he thinks she should hold off when it comes to Calvin. He thinks she may regret it and could hurt the chances of them reconciling in the future," a source told Hollywood Life.

The insider added: "He doesn't think their break-up is a done deal."

The Scottish singer/DJ had taken to his Twitter account to confirm his break-up with Swift.The Red singer and Harris had completed one year as a couple on 6 March. He wrote: "The only truth here is that a relationship came to an end & what remains is a huge amount of love and respect."

Meanwhile, Swift has a history of dating high-profile celebrities including Jake Gyllenhaal, Joe Jonas, Taylor Lautner, John Mayer, Zac Efron and Conor Kennedy. During an interview with Glamour UK magazine, the Shake It Off singer admitted that she does not find it easy having a boyfriend. She said: "There is no easy way for me to engage with romance. I'm really busy, so I can't. And it's a good thing that I feel really independent and I feel that my friends are all I need."

"It's kind of a sad way I got there, though, being shamed into it. What else is it when you have two boyfriends in one year and everyone's calling you boy crazy, making jokes about you at awards shows? That's public humiliation. And I don't think its fair," she added.