Going back to the question of compatibility, all I can say is that if you rely on a few parameters that define what a compatible relationship is, then we are missing the important point.

In the real world as we know it, some men have grown up with an in-built chivalry and respect towards the gentile sex and would say that it is in their duty to provide for women and all women for that matter.

I have known some people who cleverly use the situation to their advantage and try to get free dinners out of the other person.

Some people have known not to flinch for a second when it comes time to paying the bill and expect that responsibility rests squarely on the other person.