Which Zoe did I mean?

"Um, just a second." Jon said as he shut the door on Zoe's face. "What am I going to do?" he asked himself. He desperately tried thinking of a way out of this. He had wished he was dating Zoe do to some unfortunate wording and ill timed knocking at his door. There had to be a loophole. Then he realized there was a loophole! He had wished he was dating Zoe, but Zoe was a name any girl could have , not just his sister. All he had to do was specify or rather re-specify which Zoe he was dating. "Jon? Could you hurry up? We're losing time." his sister said from behind the door. He had to think for a minute on how to fix this the best way.