All Thoughts are Prey to Some Beast

This story was inspired by the song "All Thoughts are Prey to Some Beast" by Bill Callahan. The lyrics make me think of how even innocent thoughts can have dark undertones. Kurt has been Kitty's best friend, even though he wants something more. But he and Kitty are both dating other people, so he's forced to keep his desires in check. What if he can't? Rated M!