The character of Mulan, played by Jamie Chung, is a warrior based on the character from the Chinese legend Hua Mulan (as well as the Disney movie). When Mulan appeared in earlier episodes of the show, there were hints that she may have a thing for her traveling companion Prince Phillip. However, after she helped Phillip rescue his love, Aurora, the writers started to hint that Phillip may not be the object of Mulan's affection after all...
(Check out 7 Reasons Why Aurora and Mulan are in Love from wetpaint if you want a reminder of all those little hints.)
Finally, in tonight's episode "Quite a Common Fairy", Mulan is invited to join Robin Hood's band of merry men (as the first official female member). Mulan tells him that she is honored, but "there's someone I need to talk to before it's too late." "A loved one?" he asks. She replies "we shall see."
Then we see Mulan pay a visit to Aurora, who asks if she should get Phillip. "No that's not necessary, it's you I wanted to talk to," she tells her but before she can say what she has come there to say, Aurora reveals that she and Phillip are expecting a baby. You can see the pain in Mulan's eyes...
Mulan: "That's excellent news."
Aurora: "It's like a dream come true. Now please, please tell me your news!"
Mulan: "I'm joining Robin Hood's band."
Heartbreaking, but also groundbreaking. Is Mulan the first lesbian (or at least bisexual?) character on the show? It's sad that there's an LGBT character but she isn't able to be with the woman she loves... but it's a start at least. Mulan also happens to be one of the few remaining minority characters on the show and she's a badass, strong woman to boot. Good for you Once Upon A Time. Now let's get Mulan a girlfriend!