- “But maybe I need you.”
In Seasons 1 and 2, Emma and Regina were enemies fighting over custody of Henry. In later seasons, they became allies in order to fight various villains such as Zelena, Hades, and, in season 6, Regina's evil half, the Evil Queen. Said evil half came about via a Jekyll-and-Hyde split.
On AO3 it is the most written ship for both characters, and the most written ship in the Once Upon a Time tag.
- Swan Queen won the Zimbio 2018 March Madness ship battle