The 'Written in the Stars' hitmaker admits that he has never committed to a girl long term and can't imagine embarking on a relationship any time soon, because of his "roller-coaster" success over the last year.
He explained: "I don't think I've ever been in love.
"In an ideal world, I'd find the perfect person who understands my situation. As you can imagine, this year has been a roller-coaster, because I've been travelling so much. I don't think it would be fair to put someone through it emotionally."
However, if the 22-year-old British star did decide to find his ideal girl, he knows exactly what he would be looking for.
He said: "I'm a bit of a sucker for a pretty face.
"Confidence is the most important thing. A sense of humour too, because I like to crack a joke. Lots of patience as well, as my life is pretty hectic."