I have struggled overnight for an analogous physical representation. I think that I have it now.
Consider two nested spheres, the interior sphere labeled boredom, and the exterior sphere labeled love. As the size of the love sphere grows for a given size of the boredom sphere, the volume between the spheres love-boredom increases, strengthening a relationship. If the size of the boredom sphere exceeds the love sphere then there is a deficit of love-boredom, which manifests as dislike or even hatred.
Now with the same center as the love and boredom spheres, place a regular tetrahedron at each of whose four apexes is a sphere, with the four spheres labeled interest, familiarity, variety and novelty. The intersection of the spheres is dependent upon the radius of each sphere, which varies. Let us call the center of the construct of tetrahedron plus six spheres "heart". At heart is a composite of forces from the six forces mentioned so far, with love/boredom radii dependent upon the flux density of the four more fundamental forces at the heart. If three spheres of the four intensity forces are too small of radius to reach the heart, then the fourth sphere determines the entire flux. For example a person might be overwhelmingly devoted to familiarity. In that case the heart makes love increase with familiarity. If a person's familiar spouse is interesting, and interest swells its radius to influence the heart flux, then love increases further. I would need some type of 3-d modeling software to check out all of the combinations.
Furthermore let it be noted that if a person is unbalanced emotionally, then there is no reason whatsoever why the heart should be a common center for love/boredom and the tetrahedron. If a person's mental state fluxes, then the tetrahedron volume may change. If a person is emotionally warped, then it might not be a regular tetrahedron.
We are nowhere near a full description of the forces of emotion of which there are several dozen vectors, but there seems to be little interest. Would anyone care to comment?
Lonnie Courtney Clay