Ariana Grande has revealed that it took a while for the chemistry between her and The Wanted's Nathan Sykes to hot up.
The singer-actress admitted she first noticed the British singer months ago, but didn't act on her feelings.
"I saw him in March on a red carpet, and we locked eyes with each other all night. I thought, he was cute as hell. Nothing happened obviously and then, the duet came about," she recalled.
It wasn't until the opportunity to duet together on the song, Almost Is Never Enough, featured on the Mortal Instruments: City Of Bones soundtrack, that she summoned up the courage to speak to him. The track is included in Ariana's debut album Yours Truly, which is out now.
"We hadn't met really still, until we shot the video," she said.
"It was a really fun day - he was very sweet and cute. We started talking and then it just went from there. No, actually w e didn't really start talking until we met again at Justin Bieber's tour in August."
The couple, who are both 20, decided to confirm their relationship on Twitter in September, after weeks of speculation about their romance.
"So, I guess it's obvious now... thanks to everyone who is being so lovely. I'm so happy #butweareterrified #pleasedontkillme #orariana," Nathan wrote.
Ariana added: "We hesitated saying anything as people can be a bit insensitive but thank u we value all of your happiness, thank you for valuing ours :)."