Two variables for consideration, applied to both parties...
-SMV
-Interest Level
The following continuum applies; on a sliding scale, from ultimate benefit to ultimate dis-benefit for a guy.....
1) High SMV, High Interest Man + High SMV, High Interest Woman
2) Low SMV, High Interest Man + High SMV, High Interest Woman
3) Low SMV, Low Interest Man + High SMV, High Interest Woman
4) Low SMV, High Interest Man + Low SMV, High Interest Woman
5) High SMV, Low Interest Man + High SMV, High Interest Woman
6) Low SMV, High Interest Man + High SMV, Low Interest Woman
7) Low SMV, High Interest Man + Low SMV, Low Interest Woman
8) High SMV, High Interest Man + High SMV, Low Interest Woman
Could expand this right out to every possible combination, but I've already made my brain hurt just with these. You get the idea. SMV and Interest Level of both parties should be as closely aligned as possible for medium to long term success. It's is a man's responsibility to monitor these things and act accordingly. It's all too easy to meet a hot chick, go along and pay absolutely no attention to her interest level.