The Fear singer finds life on the road lonely because she doesn't have the chance to get to know people well enough to embark on a relationship.
She said: "It's nice to have sex with people you love. I'm not really a promiscuous person. I haven't slept with many people and on a promotional trip you don't get a chance to meet or s**g anyone and I don't like one-night stands."
The 23-year-old star also revealed she is planning an 'Employee of the Week' contest to reward her staff after learning her tour manager has been sitting with her in business class while the rest of her entourage are in economy when they fly.
She explained to Australia's Nova Radio: "The record label pick up the bills. I have now discovered that I get to choose who sits with me at the front while everyone else sits in economy.
"My tour manager never quite got around to telling me this and has been booking himself to sit alongside me every time.
"I want to introduce a sort of employee of the week award where one of the band or a roadie can sit with me at my choosing.
"It would be someone who has excelled or needs a treat."