#2: Demetrius & Helena, and Lysander & Hermia
This Shakespearian romance is not actually a couple but a quartet—and at the conclusion of A Midsummer Night’s Dream, they end up as two happily married couples. Their courtships are all so intertwined, though, that I had to group them together.
What seems like an impossible web of emotions and missed connections is somehow all resolved by a wild night in the woods, while the characters are off their heads on mind-altering potions and/or jealousy.
All’s well that ends wells, and the couples are set by morning, married that evening, and blessed by a protective spell as they sleep that night.