How do you convince your significant other?

[samsam]

This is not a very serious question.

I am guessing most people here can afford an expensive watch (or more), but I find it difficult every time I am planning a new watch-hunt to convince my wife that I want to buy another watch (although we can afford it and she knows that I really love watches.)

I am wondering, how do you guys deal with this issues without sleeping on the sofa for a week after every new purchase??