Maybe he missed out a lot of redeeming qualities about Ilse that made him go through with the marriage. From the content of the article he doesn't seem complete

Maybe he missed out a lot of redeeming qualities about Ilse that made him go through with the marriage. From the content of the article he doesn't seem completely on-board with it, and makes her seem callous towards the death of his dog for the sake of _her_ big day.