Nathan Sykes might want to send some flowers and candy to girlfriend Ariana Grande, STAT.

In an interview, the Wanted singer admits to crushing on a famous singer -- and, gulp, it's not Ariana, but Selena Gomez!

To be fair, the interview was conducted before Nariana confirmed their relationship, and Nathan approaches the subject in a funny way, comparing himself to bandmate Max George.

"Now this is why I'm so jealous of Max," Nathan tells U.K. magazine We Love Pop. "He follows someone on Twitter, then he is in the tabloids saying he is in a relationship. I started following Selena Gomez and nothing. Where is my relationship?!"

He gets serious before paying Sel some serious compliments -- and admitting he'd never cross Justin Bieber! "To be honest, I always liked Selena, but I really did not want to go that side because Justin would kill me," Nathan says. "I would probably receive a call from [our manager] Scooter telling me to stay away! But she is splendid. She is perfect."

Nathan should probably start thinking of other nice adjectives to call Ariana on the card with those flowers!