@blazing_boz I think you're reading too much into this one. I can understand wherein a lot of shoujo manga rape culture isn't treated sensitively enough. In this case, though, I don't think it's anything like what you're saying.
They're both in the same mindset in this story. He thought that she was being shy and not forward, not that she doesn't want his sexual advances and therefore that turned him on. Yes, he misread her but it doesn't mean he was being aggressive about it. You also have to take into consideration their timeline/setting. It's not so strange for the husband to make a move first as forward as he was especially when they've been getting along so well (well I guess you could say this about any couple that's in a good relationship). Mind you also, she wasn't particularly against it as shown when she goes to bed. She was taken aback and was slightly confused at the moment it happened but not 'disdainful' of the action.