If the guy develop any feelings for the girl and the girl is not
interested, then the girl should just tell the guy straight up that
she wants friendship only, nothing more.
That's what my friend does. All those guys are interested
in her but in the end, they just become one of her buddy type
friends. Those who can't accept it will usually stop looking
her up. Those who are resigned to just being friends with her
end up as her close buddies sometimes.
Who says there can never be platonic relationships? 
exactly. just be straightforward about it, makes everything
easier in my opinion.
