You agree to her condition.

Sure Julie’s request is kind of weird but this is the one chance you have been waiting for your whole life. Finally a girl wants to be your girlfriend and it is Julie of all people, the girl of your dreams.

Therefore you reply “I don’t quite understand why you would want to be my girlfriend Julie, I mean a girl like you doesn’t has to settle for a loser like me. And while your request that I have to wear diapers from now on, is quite unusual, I am just tired off being alone, so I promise to wear diapers from now.”

“Don’t worry I will explain everything in due time sweetie, just come to my apartment in two hours.” Julie says smiling.