I thought about the happy/unhappy thing, but I thought at the time that jealousy doesn't necessarily mean you're sad, it could mean you're angry or something. Maybe happy/upset would work better, as upset can mean both sad and angry. Let me know what you think works best and I'll rework the chart.
I might eventually (not right way) make a little comic explaining each situation to go along with the graph. I actually find that pictures make it easier to explain things, and I would love to have a bunch of pictures I can link people to in order to explain the concepts involved around poly.