That's why I liked "Stranger than fiction" so muxh- everyone keeps their heads. It's not like the girls that were his friends before suddenly became bimboe sluts- the D&D nerd-girl is stilll a D&D nerd-girl, just with an amazonian build and a rack that won't quit.
I especially liked the way the main character reactied. To not instantly become some kind of porn king horn dog but to instead react with a much more human "wtf is going on here?!" really sold the piece to me.