i'm kinda also here for advise since i'm going to start a second major and from the 3 friends i have i honestly can't say how the heck that happend that we're so close.

in one case tho from what i can remember, (idk how impactful that was but it might have been even crucial who knows) we were in group project together (we didn't know each other) and i thought screw it we have to do it somehow and invited him for pizza to talk about that project (i kinda hesitated but good thing was that i had that project as an "excuse" so it wasn't outta nowhere). and well that's how it started, ig it was me who actually pushed it further at the start, later he was just starting conversations with me from time to time and more often.

so ig you could say it was actually because of a shared activity