Published Tuesday, 22 October 2013
The singer, who was briefly linked to Lindsay Lohan last year, has fallen for Adam Levine's ex Nina Agdal, and admits the couple is in its "honeymoon period".
He tells new! magazine: "We've known each other for about a year. We've been friends for a while and then a couple of months ago we met up and thought, 'Let's take the next step'.
"We're very much in the honeymoon period. She's awesome. She's like a best mate as much as a girlfriend. I've finally found a girl!
"I've always liked having a girlfriend. I've just not managed to settle down for the last two years."
He's not the only band member currently in a high profile romance - Nathan Sykes recently confirmed reports he's dating singer/actress Ariana Grande.