It just came back to me!
Manpoints.
All the official rules an' everything explained in great detail.
At a later date.

Generally, you start off with a set value.
You can never earn points.
You can only keep or lose them.
Value freezes and/or is set to zero at time of marriage.
(In case of divorce and/or death, you can jump back at the value you were at)
Winner is the guy that has the most points leftover 'fore he commits.