maybe he was about to be kicked out of his last apartment (or the other way around) and heard she had a free room? he’s in a similar field so they could’ve met through a friend of a friend. zach is pretty messy, so there could be some fun tension for us there if that bothers her, but he probably enjoys living with someone who is a bit more organized than he is. he’s a nightowl so he’d always be up for staying up and talking shit until ungodly hours of the morning!