It is funny how humans are creatures of such extreme nature. I was rereading you section on love not being reciprocated. You are completely correct. Our bodies and minds almost kick into the fight or flight mode. We either run further from the problem or we engage it. We usually do both poorly. When we engage it, it is usually like you pointed out with questions and/or accusations or even crazy behaviors. Not know that all we are doing is driving a wedge further.

We also, as humans are social beings. We need other people, not just the person that we are sleeping next to. If we isolate our self or our partner, then we create a single point of failure by which one thing can upset the delicate balance.