I've felt (and still have) friendships to this day that were formed in a single conversation over a shared university class and then a bit after. I've tried to

I've felt (and still have) friendships to this day that were formed in a single conversation over a shared university class and then a bit after. I've tried to make other friendships work by maximising time spent with someone, and it basically never worked. Highly frustrating if you're the systematising type.