This comment fells too reddit esque for me, as if it's crafted to solicit upvotes or "facebook up, hit your lawyer and delete the gym" style comments.
- Why is your partner getting the call from the bank when you placed the order? - If it's a shared account, why would you not forewarn your partner about this transaction? If I'm about to buy pay for something big from our joint account, I sure as hell let my partner know about it ahead of time. - If none of the above applies, then a simple "it's a portable gaming console that I've been yearning after for ages that I finally ordered earlier today", and 9/10 times that should settle the matter.