Baby it’s Cold Outside
No matter what there is always someone in the relationship who is either always hungry, tired, or cold when the other person isn’t. These are just the rules of love, and there is no way of putting logic to them or trying to explain them.
Even when it isn’t actually that cold outside, someone is always going to feel that it is. Remember how hot her showers were from a few slides back? Well, it makes sense that she gets cold easily judging by the temperature of her showers.