Have you ever spent a really large amount of money without telling your partner about it? Were you able to keep it a secret? If you were found out, what were the consequences, if any?

Feel free to add as much or as little as you want regarding details.

My most expensive purchase was a computer costing about 2500 dollars. My wife found out later (and she was a little miffed) but I was able to pay it off fairly quickly so it turned out okay in the end.