oomis, you conveniently disregarded the point that it is an issur m’doraisa for boys and girls to be “friends”, platonic or otherwise. Apparently Chazal (???? ???? ???), Shulchan Aruch, Maharal, the Ran, Rav Moshe, etc. are insufficient?
http://www.scribd.com/doc/22288885/R-Moshe-Feinstein-on-Platonic-Relationships