"We met the Jonas Brothers. Nick [Jonas] is so cute," Kardashian, 27, told PEOPLE Saturday backstage at KIIS-FM's Wango Tango concert, where the Jonas Brothers played to thousands of screaming fans.
"I don't think Reggie will get mad because [Nick] is, like, 15," noted the Keeping Up with the Kardashians star – whose family was on hand to introduce Miley Cyrus. "I really shouldn't say that he's cute. It's a little inappropriate! They're adorable."
But Bush proved that he's the real keeper, dutifully carting the couple's concert swag back to their car.