#10: Sun's And Jin's Deaths On 'Lost'
Before crashing on the island, Sun and Jin’s relationship was borderline abusive, where Jin kept her locked up in the house as a trophy wife and took away almost all of her freedoms. While on the island they worked through their issues, fell in love, and even became pregnant. Which is why when they tried to escape the island on a submarine and it began to sink, their decision to drown together shattered the audience. It was their last gesture of love.