Objectively, Chase knows that House is aware that he's lying, even if he's trying not to think of how much he's lying. He's trying not to address the fact that he's wanted House since that interview, since whatever that first cruel comment was that made him smile and shiver all at the same time. For seven years he's wanted him, whether it was on his knees, sucking on his cock like he does the candy canes that always end up laying around en mass come Christmastime, or bent over and getting fucked so hard his toes curl and he can't string two words together. He's married now, but none of that has changed.

House doesn't push it, which means that Chase doesn't have to bother trying to defend his position. To try and come up with some explanation as to why the kink is less cheating than the sex would be. Offer cheap excuses about how the only path he has to save his marriage is to deal with the fact that he killed Dibala, and that he needs this in order to do that. This isn't altruistic, and he wants House as much as ever, maybe more, and they both know both of these things. Chase knows that, but it's easier to deny as long as House isn't pushing at it.

He slips out of the car, closing the door behind him, the bag in hand as he follows after House.