For me, sometimes having sex is a place to give from with in me. Sure, I receive something from the experience if it is gift sex, but the event/process is a place to let out/express some of my feelings that hopefully the W will also receive something
In a way, sex fills one cup and allows me to empty another cup. One way sex or having sex when the W doesn't want to or does it reluctantly, only satisfies/exchanges the contents one of the cups.
I suppose non-reluctant/goodwill gift sex has exchanges in two cups, but it still isn't as satisfying as the 4-cup exchange model I had in mind.
When both people want to have sex, in a way, 4 cups have exchanges with in them.
I suppose this explanation is a bit Cemar'ish/mechanical, but that is one way of explaining why sex with an emotional connection and an enthusiastic partner, is so important to some people.
It might also be related to why some men or women get into a “don’t give a crap” mode. The exchange rate/value just isn’t happening at a high enough level to overcome some of the R problems.
