Let's face it, Kylo Ren probably doesn't do much all day. Hux, on the other hand, has an Imperial fleet to run and it's exactly as stressful as you would imagine. So stressful, in fact, that it has pretty summarily executed his sex drive - when he's not working (and when is that?), he's grabbing a few winks of sleep, and the few times Kylo has tried to start something it's failed massively.

Give me them dealing with it, and/or Kylo trying really, really hard to appeal to all of his kinks to get some sort of reaction.