Comment by hashhar

I'm from India too (but at-least a generation older than this kid) and to clarify:

proposed = asking for a date or if he's too forward / self-centered then asking her to "be my girlfriend"

crush = a girl I like but haven't told that to her or shown it in public

And yes for kids in school it's quite common to initiate conversations through mutual friends because otherwise gossip spreads too quick and can sometimes be damaging (both emotionally and socially).