for the girl it is possible but not for the boy
if a boy is interested enough to be a 'friend' to a girl, he
wants to bang her else there will not be any interest at all - no
such thing as 'friendship' interest
i thing i forgot to mention, the boy may also act
interested to be a girl's 'friend' if he is interested in banging
the girl's other female friend/s
oh my goodness, what a mess. what to say,
males - many of them can't control their urge.