Going to have to take the point deduction. I can’t tip off the wife to the new bike just yet as we share photos in iCloud. 
Two words - burner phone. 
Amortized over 20 years a bike cost very little. A 10,000 bike is about $ 40 a month. Don’t sweat it.
Honey, it’s Italian.
see you in the Ti- / Steelbike thread?
Oh man, and I thought my bikes are expensive (all less than 4k). 
“Do not worry, honey. It’s not a gravel bike.”
i’ve also adopted this approach, 8 months on, still going strong
LOL. I’ve bought cars without telling my wife, only to have them arrive on a transporter, much to her chagrin.
Example 1:
Example 2:
(fear not… I’ve also bought stuff for her that was an equally fun surprise. And she has a cool trick of walking into my office and saying “get in the car, we’re going to the airport for a surprise vacation”).
In other words, a bike shouldn’t raise anyone’s temperature - especially if it keeps you happy, healthy and you can afford it.
p.s. We celebrated our 26th anniversary this week, so trust me, we’re all good in my household.
Yep in my house, as long as the bills are covered and not raiding the reserves,… have at it,…going on 22 years now…
That‘s true.
I think what shocks most people is the different perception of value: For most people bicycles are everyday objects of no particular value. Paying a lot of money for them runs counter to this perception.
I already told her. You’re good.
I am disappointed by the number of not wrong answers on this thread.
Most people just occasionally ride around the neighborhood or at some paved multi use path. Most any bike will do for that. I have friends who just buy cruiser bikes off of fb marketplace for $50 and ride it around the neighborhood until it falls apart then toss it. They usually get at least a few years out of the bike if not more.
I think I see a potential strategy here! 
As someone who has been on the other side, I would advise you to figure out how to present this purchase in a way that makes it seem like the right and necessary decision. I’m sure she’ll understand if you tell her it was a matter of life and death. Or you can tell her that you won money at the casino thanks to this review https://terracasino-ca.com/fr/caxino-casino/ which helped you get a bonus. But keep in mind that you will have to buy a gift for her too
PS
I told my husband I might accidentally hit his Xbox while cleaning. He understood me
That however would be the perfect opportunity to buy the newest playstation. 
3x4,000 > 10,000
Hate to be the bearer of bad news…!