In it, Blaine sees Kurt shirtless for the first time at Dalton, and begins to think that he [Blaine] is ugly. He hides from Kurt, because he sees Kurt as perfect, and thinks that he is worthless. Kurt thinks that Blaine is ignoring him because he doesn't like Kurt any more after seeing him shirtless. Blaine makes a list in a notebook of all his flaws (I remember 'big nose', 'hairy chest' and 'weird eyebrows' specifically), and Kurt finds it. Kurt cries and Blaine thinks that even crying, Kurt looks perfect. Kurt kisses those parts of his body, and tells Blaine that he has flaws (short teeth and freckles), and says that he accepts these flaws about himself because he knows that Blaine will accept them.
With the amount of key words I remember from this fic, you'd think I'd be able to find it on google, but no such luck. I'm hoping one of you remembers it?
Thanks in advance, and I hope I got the tags right.