that’s not necessarily true. one of the two can, the other could be playing them. some people can be duped due to being in love and wanting things to be what they want, and that’s just a recipe for a setup.
they both also could be stupid and maybe were great romantic lovers, but find there’s nothing there when that phase tapers down to normalcy and general patterns.
If you start a marriage, loving your wealth more than your wife, I guess you should have a pre-nup.