The Disney star was snapped kissing the Biebs at the Vanity Fair Oscars party, but during an appearance on David Letterman's Late Show, she remained coy about their relationship.
When shown a picture of the smooch, the 18-year-old said, 'Oh, that's cute.'
But when asked outright if she is dating Bieber, 17, she simply answered, 'It was like a little prom night, wasn't it? Looked like it.'
But Letterman forged ahead, asking, 'How long have you known him?'
'Uh, almost, like, two years now,' Gomez replied. 'Actually, his manager called my mum, who's my manager.
'I'm blushing! He's been in my life for so long, and it's just nice to have someone that understands what you're going through.'