I think they all subconsciously know that if Yuu took any of them to a love hotel that he will be a withered husk drained of all his fluids by midnight. Love hotels are an auto game over for him.
I was going to comment on how she seems keen on the idea of "going somewhere dark to lie together" while struggling to walk, but then I realized that Yuu is probably too weak to cause any damage if they did do the deed.