Calling a pedosexual a pedophile deprives our language of the word for one who shows natural affection for children and creates an offensive, degrading, and intimidating environment for people displaying natural affection for children. This discourages people from displaying natural affection toward children, starving children of the affection they need, and making them more susceptible to the comparatively affectionate advances of pedosexuals.
Bob is a pedophile but he calls himself a "pedosexual" in order to portray his deviant sexual desires as a mere sexual orientation. The rest of us know Bob is really just mentally ill.
Someone who is aroused by pedophiles.
Also, someone who is in love with a pedophile and fiercely insists that the object of their affections is not a pedophile.
(Closely related to hobosexual.)
Aya: Did I tell you what Reg said to me last night?
Dog: Aya, he's 21 and you're 14. He's a pedophile, for gosh sakes!
Aya: No he is not, he's my lover!
Dog: You are SUCH a pedosexual.