I see from your profile that you have been thinking a lot about the biological explanations for the things you have experienced in your relationships and what you've observed in the relationships around you. I have been very focused on those explanations too. I just started a topic today I titled "primal instinct?" because I have been trying to explain to myself the extraordinary experiences I've been having with older women. There is something very different and intense about these experiences. I want to find the words and concepts to explain it. I can see that you have much to offer on the subject. I hope you will.