
With all this in mind, it does look as though Tywin has a rather warped relationship to prostitutes. We do not know for sure, of course, but Tywin was Hand of the King for a good long time, during Aerys' reign. Chataya has closely guarded the knowledge of its existence." "The tunnel was dug for another King's Hand, whose honor would not allow him to enter such a house openly. "How is it a brothel happens to have a secret entrance?" If one pays close attention to an earlier Tyrion chapter, where Tyrion and Varys discuss a hidden entrance to the brothel that Tyrion uses as cover: "I was made to suffer my father's follies. He therefore upon his father's death punished her by stripping her naked and running her out of town. Lord Tytos was not a strong lord, and this woman took liberties that according to Tywin shamed house Lannister. The foreshadowing of Tywin's derogatory view of prostitutes is his father's relationship with a woman who was "a common born woman, daughter of a candlemaker".

"make sure I don't find her".) And of course, we are familiar with the story of Tysha, the common girl that Tywin "made" into a whore by allowing his soldiers to rape her. The next one I find in your bed, I'll hang."

If one pays close attention to what Tywin says to Tyrion, one can notice, as Theik says in his answer, that he is not opposed to visiting whores, only in doing so publicly.
