Even as one who's never actually watched AGE, I have to wonder: where did this pairing come from, anyway?
Based on what I can gather:
-Fans start watching Asemu's arc
-Romary shows up
-Her hair looks like Kio's therefore it is logical they will have him with her genes being dominant
-Everyone waits for the inevitable romance development
-I find her ugly, I make a mean comment, blah blah blah
-Arisa shows up
-A friendship forms with them both being MS pilots
-Fans like Arisa more and start acting like me
-Ep 28 rushed a load of things including a rushed marriage
-Some fans take some things they said back including me
-Now fan thoughts include everything from Arisa having a secret affair to Romary apparently being MILF material
And the shippers somehow lived, perhaps they are ultimate coordinators.