Ryner fears all things that involve someone caring too much for him. And his relationship with Sion in Aather is very much someone who is just always there and he loves him greatly for it. He is also genuinely comfortable and happy around Sion. But he can't wrap his head around why a KING would want to love someone like him at all. It's even more surreal than Ferris because Sion has RESPONSIBILITIES and people who look up to him. He can't be seen like that with an Alpha Stigma, a threat to everyone. Them being friends is hard enough for Sion's image. ;; And he also can't think of it when he's trying so damn hard to figure out how he can save him.

But yes Sion feels for Ryner the same way Ferris does. Ryner acknowledges this and loves them both but BLOODSTAINED HANDS BLOODSTAINED HANDS. I cannot stress enough how much this fucks up Ryner's entire perspective of himself and is VERY HARD to convince him otherwise. He already has proof of what people do to those around him.

So no it's not active disinterest, just pure and simple fear of hurting the people he cares about. It's easier on them to just... not talk about it. Ferris gets further only because she's slightly pushier, but Sion also gets his reactions when he pushes enough. >>;;