When I read of some of these failed and repeated affairs, I wonder if the brain releasing excess levels of dopamine, pheromones, serotonin and oxytocin also causes a person's IQ to go down by 20 points or more. Surely when affairs fail, the sudden lack of such chemicals being produced must cause some sort of depression.

Is it possible that a failed affair or loss of fantasy can lead a person into an MLC? It seems a chicken or egg quandry - which came first the affair or the MLC?