American Psycho is pretty good...although nothing takes reading this paragraph in the book.
Roughly I push my cock back into her and bring myself to an orgasm so weak as to be almost nonexistent and my groan of a massive but somewhat expected disappointment is mistaken by Courtney for pleasure and momentarily spurs her on as she lies sobbing beneath me on the bed, sniffling, to reach down and touch herself but I start getting soft almost instantly – actually during the moment I came – but if I don't withdraw from her while still erect she'll freak out so I hold on to the base of the condom as I literally wilt out of her. After lying there on separate sides of the bed for what might be twenty minutes with Courtney whimpering about Luis and antique cutting boards and the sterling silver cheese grater and muffin tin she left at Harry's, she then tries to give me head. "I want to fuck you again," I tell her, "but I don't want to wear a condom because I don't feel anything," and she says calmly, taking her mouth off my limp shrunken dick, glaring at me, "If you don't use one you're not going to feel anything anyway."