All 3

Mostly because of Rumples instant guilt over realizing what he did, and how he had broken his promise to Bae losing him in the process. Then I'd say Emma and Charming would be second for me.

I have to go with Prince Charming & Emma on this one, mainly because Emma was a newborn. She hadn't even been for alive more than a few minutes, so their time together was agonizingly short.

By far! They had been through so much while, Emma & Charming hardly knew each other.

It was really difficult for me to pick this one over Rumple and Bae, since I love Bae and thought their separation was utterly terrible and heartbreaking. Still, I was a sobbing mess during this scene and their reunion at the end. I didn't cry during Rumple and Bae's scenes.

Mad Hatter & Grace's relationship is so cute

Jefferson & Grace and Rumpel & Bae, too but I'm still thinking about this one :'(

This!Still crying....

I have to say this one.. Rumple and Bae was sad, but the fact that Pan wanted to let Rumple go and made the conscious decision to do so even though Rumple was so young does it for me. Rumple was clinging to his father and heartbroken over being intentionally abandoned, and none of it fazed Pan. To me, that's horrible. At least Rumple regretted that moment of hesitation every second of every day since he made it and dedicated his life and his powers to reuniting with him.

I felt my heart breaking for little Rumple. :/

Rumple was a bad father, so was Pan so I didn't find those emotional, although I did feel sorry for the "Kids". But I was a wreck at this separation! Crying so much :P