After Maxwell had gotten his fill, Andrew took a moment in the bathroom to recover himself. Compose himself. It wouldn't do either of them any good if both of them didn't have their head on straight.
Not in this circumstance.
Andrew thought that Maxwell was going to be fine, but he also took Michael's warnings seriously. And there were his own feelings involved now. Once Maxwell's heat had gone down to what most would consider a 'manageable level', Andrew's own body had begun to act up.
It was actually a good thing that Maxwell had slept for so long. It gave Andrew time to freak the fuck out. He'd had a whole day just to stare at his new face, his new fangs without Maxwell telling him everything was going to be fine in the background.
Not that he hated that Maxwell cared about him so much. But sometimes…sometimes you needed to just freak out for a little bit.
There was also the issue with his height. And his body.