If he was going in date/marry with the intention of overwriting his childhood trauma, he wasn't anywhere ready to be a bf/husband. Kaori isn't there to ease his pain. It's a mutual relationship, not one-sided therapy.
I do hope, over the next couple chapters, he understands more about marriage...
Irrelevant to the story, but that Marble t-shirt logo stands out way too much. Especially how obvious the cut-and-paste it is. The shirt was drawn to have wrinkles and folds, but then suddenly a perfect rectangle MARBLE