What is the chemical? There are a lot of people that I find attractive, but that I haven't got any sexual energy for, and there are people that I don't find attractive that I have a natural involuntary sexual energy for. Plenty of course that are attractive and there's strong chemistry, but those persons on the fringes I've never understood. The people to which I'm very very attracted but to which my body won't respond. One of these I've known for years and years and have always... always found to be extremely attractive and had always been surprised by how little actual... chemical I ever had for her, I was sexually, bodily disconnected from her and I didn't know why.

It changed out of nowhere seven years later and there's suddenly no one I've had more energy with in my life. While many others that I had strong sexual energy with before regardless of my attraction to them faded.

I've never understood what all of that is and what decides it. Any ideas?