Liane Moriarty said this quote

...the terrible though occurred to her that perhaps she'd always unconsciously believed that because Sam didn't cry, he therefore didn't feel, or he felt less, not as profoundly or deeply as she did. Her focus had always been on how his actions affected her feelings, as if his role was to do things for her, to her, and all that mattered was her emotional response to him, as if a man were a product or service, and she'd finally chosen the right brand to get the right response. Was it possible she'd never seen or truly loved him the way he deserved to be loved? As a person? An ordinary, flawed, feeling person?