In a recent interview, JK Rowling has admitted that she wrote Ron Weasley and Hermione Granger together for selfish reasons and that Ron probably wouldn't be able to make Hermione happy in the long run. Clearly she forgot they're characters in a book and by typing 'and they lived happily ever after' they will live happily ever after.
She told Wonderland magazine in a rare interview: "I wrote the Hermione/Ron relationship as a form of wish fulfilment. That's how it was conceived, really.
"For reasons that have very little to do with literature and far more to do with me clinging to the plot as I first imagined it, Hermione ended up with Ron."
Presumably Rowling was going to pair Hermione with Harry, and have Ron die an old cat lady. Personally, I think she should have paired Ron with that Neanderthal Quidditch player he was so in love with. What was his name, Gronk? "Krum." YES. He and Krum would have made a beautiful couple.
Thanks to Kalbedz, FISS and Sarah, who all claim love potions don't work even though I know for a fact they do because there's no way my roommate should be in a relationship right now.