[@KimmiNinja] WEll, if they can and have been in relationships for whatever reason, it's entirely possible that their current circumstance is in one.  But for ease of plot, I can see why you'd prefer not.

Hm.  I'm gonna just...lurk for a while and see if anything spins up in my head.  I have an ace/aro or two, but I'm not sure if I have anyone for this, and I don't currently have any ideas.  At least.  Not without a fantasy setting.  Though I could redraft Cas and make a new char with her base...hm.  *ponders*