i think i know what you mean.I'm not emotionally anywhere when I'm with other men, I'm rarely emotionally there when I'm with hubby either if I'm honest.
To me, normal every day sex is just that, sex, there is no emotional involvement from me, it is servicing a need. That isn't to say that I don't like the person its with, or care about who it is with, because I do, but that has more to do with the before and after than the act itself.
I have different sex with hubby, sex more fitting with the real me, and that is very emotionally involved. Only one other has been a part of that sex, and yes I was emotionally with him during that time.
I'm not sure I'm explaining this very well...
you explained it well.