Here's my interpretation (warning: I am 70 so well out of touch with modern youth behaviour). Your crush's friend obviously thinks the singer fancies you (you are in the best position to know whether this is likely or whether he is just a friend you talk to a lot) and he (your crush's friend again) also thinks (or knows) your crush fancies you.
What was the song incidentally, it may have some bearing on this puzzle of personal preferences.
Why don't you ask the singer since you seem closest to him - or would you find this embarrassing ?