I know this should be on the character relationship thread, but I wanted every one to see my topic. So sorry for doing this, I promise it won't happen again.
Evidence 1: On the serpents pass, Toph seemed to act the damsel in distress. Quote: Oh Sokka, you saved me(hug then kiss)
Evidence 2: While they were in Ba Sing Se, Toph complemented on Sokka's Drawing even though she couldn't see
Evidence 3: While searching for Appa in Ba Sing Se, Toph split up the group and insisted on going with Sokka.
Evidence 4: In "The Crossroads of Destiny", after being picked up by Aang and Sokka, she is seen hugging his arm as a girlfriend would to her boyfriend.
So it clearly proves, Toph has a crush on Sokka, even though he doesb't realize it.??