i think the pragmatic nature of both of our guys might be a good way to bond? cal moved to the city with his younger brother after their folks died around a decade ago and currently works with homeless youth in the tenderloin. he's a workaholic to a fault - after essentially being the guardian to his younger brother, he's got hang ups about making sure everyone else's needs are taken care of, even if it means sacrificing his own/the ones he cares about. if he's best friends with harry, they might have met at some gig or at one of the giants' events? cal and harry are tangentially close. otherwise i can see cal attending one of many actions at uc berkeley and maybe running into your guy at some blockade or something.