Nicole can become a physical Mobian, and she can be by using nanites. And besides, think about what Tails has done for her. Protecting her so many times. Like when he protected her from Monkey Khan, showing that he still believed in her. If you don't like it, simply don't look at it, don't bother comment on it. I don't want to get into a pairing war with anyone. Anyway, I freakin' love this couple. Makes more sense than TailsXMina, TailsXFiona, ect. Its the best Tails couple since TailsXCosmo.
Dude, Nicole is the best girl for Tails. They aren't really that different. They both were insulted and made fun of by society, but were accepted by the Freedom Fighters. They are both incredibly smart and caring Mobians. And like I said, Nicole can be a physical Mobian.