Re: question
Damn it Merlin /just shoves him and Porthos together already. And also word on Bucky ffs. Just give the man a kissing booth and watch the whole island line up without provocation.
I very much play Snow as having zero romantic interest in anyone else. If she has crushes on others (like, say, Red) they go thoroughly unnoticed and unacknowledged because she's happy with Charming and lbr their love is revoltingly massive. But as said above, I'd think that Red would likely be a candidate for someone she could care for (and it helps that Red and Charming get along, too).
Also I'm sorry Aramis, while she does love and adore you, I don't see it as being a romantic thing because... honestly, he's rather similar to Hook. He's more Emma's and Charming's type. Snow's type has always been... Charming. Big puppy type who's sappy and cute and sweet but also can be kind of a jerk.
But then, even characters who have similar characteristics to Charming don't quite fit into Snow's 'type' or potential love interest (like Arthur, or Bucky, or Aramis). So it basically just boils down to... she only has eyes for Charming.