i think oli would have been at least a grade, if not two, in front of zeph and seems to be the kind of kid that his parents wouldn't want him hanging around. the school in bar harbor goes from k-8 so maybe at some point in their younger years they bonded over some shit and got in trouble together a few times before his folks put the kabosh on knowingly letting them hang out. his family owns a business so there's eyes everywhere that know who zephan is but maybe that didn't stop him from hanging with oli and in high school he even tried to convince his parents that oli was a decent kid and a good friend and they weren't having it?