The Fortunate Side-Effects of an Unfortunate Potion

Harry simply detests his Potions class. (And everybody hates Malfoy.) But when a Crabbe&Goyle mix-up results in Malfoy ingesting a mysterious Potion meant for Harry's cauldron, will the resulting oddness be just what they need to bridge the gap between them? (Only Rated M because i'm overly cautious. Future Chapters may contain threat/violence/fear and/or some explicit scenes.)