A friend of Mary Margaret's helps the group search for Hook on Once Upon a Time. "Labor of Love" is the 13th episode of the show's fifth season.

Killian and Emma come up with a plan to get out of the Underworld on Once Upon a Time. "Firebird" is the 20th episode of the show's fifth season.

Emma mourns for Killian in Storybrooke on Once Upon a Time. "Last Rites" is the 21st episode of the show's fifth season.

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.

Emma looks beyond freaked out in this Once Upon a Time photo. It's courtesy of the show's 11/25/12 episode.

Obviously we'll never be sorry that the curse broke and Emma reunited with her parents. But it's hard not to miss the relationship Emma shared with her mother when she was just her friend and roommate, Mary Margaret. They were a lot more open with one another back then when it came to their feelings.

Frozen overload aside, Emma and Elsa formed an amazing friendship while the queen resided in Storybrooke. Both woman understood the drawbacks of magical powers and what it felt like not to fit in. We'd love to see more of these two now that Emma's accepted her place as the savior and Elsa's regained her throne.

True love always wins. But sometimes it has to fight against curses, memory loss, and a trip to the Underworld. We're partial to the first time the two were separated, and Killian traded his ship for a magic bean to New York City. He managed to convince the skeptical savior to trust him enough to take a memory potion.

Frozen fever swept into Storybrooke when Emma and Killian accidentally transported an imprisoned Elsa to Storybrooke. The queen was on a mission to save her sister. With some help from the savior, the sisters were reunited in a beautiful moment.

David and Emma toast to their family. But they're both all too aware Snow should be there, too.

We're in the Enchanted Forest for this Once Upon a Time scene. It's courtesy of the episode "Into the Deep."