Cady Eimer and Justin Bieber
05/21/2012 AT 12:40 AM EDT
isn't her "Boyfriend," but he was Cady Eimer's date for a night at the Billboard Music Awards
Who is Cady Eimer? The 18-year-old Virginia high school student had been asking the superstar to go to her senior prom with her for several years via her website
, but Bieber had to decline the invitation because of prior obligations.
But Bieber had another idea.
"I couldn't make it [to prom] so I said I need you to fly to the Billboard Awards and you can be my date," he told PEOPLE. "She's a big fan and I thought it would be fun."
Not bad for a modified senior prom. Bieber, however, did forget one prom staple. "I didn't get her a corsage," he said.