5. Sarah Kerrigan & Jim Raynor (StarCraft Series)
It may be a bit surprising to for those not familiar with the StarCraft universe, but it isn’t hatred that drives the series of Terran, Zerg and Protoss warfare, but a love story. Having fallen in love while still both human, Jim Raynor and Sarah Kerrigan’s romance was not to be. Kerrigan wasn’t entirely innocent in her transformation into the half-human, half-Zerg leader known as the Queen of Blades, but her affection for Raynor didn’t just endure, but led her to aid his forces personally and by providing Zerg backup. Even if the pair never live happily ever after, Kerrigan’s willingness to join with Raynor against a common enemy (an act of both love and vengeance) impacted the story and gameplay in consistently surprising ways.