It's his responsibility to make her feel alright. Make amends to her. He wanted so badly to bring back their sweet and happy moments together before that incident in the swimming pool took place. He and Catherine can't continue living in a cold and affectionless world especially now that they were anticipating the coming of their firstborn. He wanted to have more children with Catherine, he wanted to have at least three children with her in this lifetime. But now that dream has been tarnished by what he has done in that swimming pool one night. Like Catherine he was also trying to forget that bad memory, he and Catherine must forget that incident so that they can move on with their relationship for the sake of their baby.
She can no longer continue feigning her silence, she wants to lash out on something or anyone right now, she faced him and looked into his eyes directly. "I hate you!"