Harry has a “tell,” when he needs affection. Ron never realized Severus had the same one.
Take a few minutes (and a hankie) and go read Catch and Release at snape_potter, written for this year's Snarry-a-thon. It's really about Ron more than Harry or Snape, and it's a beautiful story of love, friendship and growth that will warm your heart without turning your stomach. Trust me, you'll love it.
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