The best friend formula

Why does every guy I know use me as a ladder to get to my best girl friends? Why do all of them, and by that i mean, all of them do that? May be I'm just stupid to make friends with pretty girls. Or even more stupid to not see it coming. But whatever the case may be, I'm the one who ends up getting completely used. Worse still, if things do work out for them, I suddenly realise how all along my 'only friends' attitude might be a little misplaced, and may be I felt more than that for him. On the other hand, if things don't work out, I still end up feeling so bad for the poor chap. Either way I manage to land myself in the most miserable state of all. Why?

All you stupid guys out there whom I (unfortunately) am friends with, you better better stop using me to hit on my best friend. Hear me?