Nick Jonas can't cook.

Nick Jonas

Nick Jonas

The 'Jealous' hitmaker - who is dating former Miss Universe Olivia Culpo - is hapless in the kitchen and has given up trying as he couldn't even master simple culinary tasks.

He said: "I'm not very good at cooking. I can barely boil an egg so I don't even try any more."

Instead, Nick enjoys dining out with friends a lot but admits it can be an expensive affair as he frequently ends up picking up the tab thanks to his devotion to his mobile phone.

He said: "My worst habit is checking my phone during dinner.

"My friends have a rule where we put our phones in the middle of the table and the first person to check theirs has to pay for dinner. It's an expensive game."

Nick's favourite food is pizza and he could happily live off a "fancy" version of the Italian dish forever.

He told heat magazine: "If I could only eat one food for the rest of my life, it would be pizza, obviously, with truffle and ricotta.

"I like pepperoni too but if I'm eating this for the rest of my life, I'll have something fancy."