ETA: For those with blocking issues:
According to the background provided by Guyism, the wife in question started keeping her diary a few months into her marriage, perhaps realizing that she might have made a mistake and could use some documentation when things end up in court.
This accounting is arguably more painful than the original spreadsheet guy, considering that this bride occasionally even went to the trouble of taking care of her husband without reciprocity.
ETA 2: HER "friend" posted this online. This was not posted by the wife or the husband, but a 3rd party.