Regina takes drastic measures by going to Cora to fight Hades on Once Upon a Time. "Sisters" is the 19th episode of the show's fifth season.

Regina grieves for Robin. We guess this is really the wrong time to ask about her outfit, but she looks amazing!

Not only is Regina grieving her lost love, but it sounds like Henry is about to get into trouble as well.

Hopefully we'll get to see Emma and Regina work together in order to save their son.

Snow and Charming must give up their hearts to save Storybrooke on Once Upon a Time. "Heartless" is the seventh episode of the show's sixth season.

We'll take any excuse to have Tinker Bell back on our screens. Her friendship with Regina brought out a softer side of the not quite evil queen. Things may have been strained once they were reunited, but Tinker Bell never shied away from giving Regina solid advice. She also believed a happy ending was possible.

Frenemies might be a better term for these two. There's no denying the two women have been through a lot together. They've both done terrible things as villains, but they've also shown great love for their children. We'd love to see the ladies team up again.

After swooping in to save Regina and Snow from a flying monkey, Robin attempted to do the chivalrous thing. He remained unfazed when Regina rejected the gesture.

After his wife's death, Robin raised Roland on his own. Given how happy the little guy seems whenever he graces the screen, we think he did a great job.

Given the circumstances, we can't blame Robin for being suspicious of Zelena's intentions. He was more than willing to give his baby girl everything she needed.

Back in the Enchanted Forest, Regina had little interest in Robin's help or opinions. That didn't stop him from offering his expertise when the heroes needed him.

As Robin attempted to woo a reluctant Regina, he was happy to meet her friend Tinker Bell. Little did he know at the time that Tink had already clued Regina in on Robin being her soulmate.