'Do It Like A Dude' singer Jessie went public with her romance at the beginning of this week after dedicating her 'Man Crush Monday' post to Luke, saying: "My first ever official #mcm. My man. My crush."
Now, former Voice UK coach Jessie has officially confirmed that the pair are dating, and opened up about her new romance on ITV's Loose Women earlier today.
"He's an artist from New Orleans," Jessie revealed. "I met him in New York. He's amazing. He's a singer-songwriter. He's incredible. I'm really happy."
Jessie, 26, did not say how long they have been dating for, but she said it was "early days".
Speaking about making their relationship work despite their hectic work schedules, Jessie said: "Teamwork makes the dream work. Whenever I have time off or he has time off.
"It's early days but I think as you get older you experience different kind of love through your life and I've got to the point where I want to celebrate someone that I've found."
R&B singer Luke, who has written songs for the likes of Chris Brown, Britney Spears and Justin Bieber, was a supporting act for Jessie last month at one of her concerts in New York.
Asked if she'd consider marriage and children, Jessie replied: "Of course".
Jessie, who released her third studio album Sweet Talker in October, said she's now ready to be open about her relationship.
"I've been quite private in the past about my love life," she continued. "I've realised I can't experience like everyone else if I hide it. I'm famous, it's never going to stop. I'm happy that I'm able to share my life."
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Watch Jessie J's video for 'Burnin Up' below: