ayay ka...hahaha...
well, its a matter of choice...
if the guy likes u and u like him too, then, its up to the both of u whether to let the feeling grow or ignore and sacrifice ur own happiness... coz honestly, f the feeling is mutual, ur frend cant do anything about it, she cant force the guy to like her back and i dnt think she wud sacrifice ur frendship just bcoz of selfish reasons...besides, if ur frend really consider u as a frend, then, she wud understand and accept her defeat...and be happy for her frend and the guy she likes...