So we've got Josie, as per mentioned. I feel like they have the kind of age difference where she idolized him as a kiddo because he was her cool older cousin and that's probably never completely gone away, but is less obvious. She's really big on protesting/marching/etc, especially as of late with the student walk out and the march, which could very well be a thing she picked up from him.
Calla's daughter is the same age as Andre, so there could be some parent friend play date opportunities there. They're also teachers and probably see each other around a lot, since the school activities tend to overlap.
Hmm, those are the two that pop out at me. Otherwise, Nick isn't too far off in age and he could always use friends! I feel like he's the sort that would go to open-mic nights just to watch, so they could have met that way.