Since the beginning, Nancy has been in love with Ace. Earlier in season 2, it became clear that their relationship went beyond friendship, especially in light of the way Nancy reacted when the hitman almost killed Ace. Because she had so many opportunities to tell him and express her feelings, but she never did, and now she can't even if she wanted to, the curse makes it far worse. She was willing to let Temperance live and deal with the new genesis simply to be with Ace, so you can see how much she adores him. since the show is about to end. You can also sense how much she cares for him because she was ready to deal with the new genesis and let Temperance live all for Ace. I'm hopeful that everything will work out with them since the show is coming to a close, but I'm bummed that we'll only get to see so much of them. I'm devastated that their relationship is coming to an end because they are such an excellent couple.