Yeah, maybe what you described is what we call LOVE, or I dunno, maybe the TRUE one? I feel that it is all about passion. After that is some sort of rational love. That`s how I feel now. I just can`t imagine the world you described, it was real once, long time ago, but I feel that as we grow into this (relations of all kind) we become more rational, (that`s what we call?) adults maybe.
Of course you love and fell, but if it happens to loose what you had you are not so devastated any more, you can go on much more easily and see facts more rationally.