Years and years after Kaer Morhen, in the bed of a particularly skilled prostitute, Geralt learned that other things besides injury and stress could trigger his strange mutation. Warmth. Safety. A lovers’ touch. He’d also learned that no matter how good of an actress a lady of the night may be, there were limits to what a human would put up with for the sake of coin. When Jaskier comes along, the White Wolf already knows to hide his freakish nature as best as he’s able.