For sure, such things exist. That doesn't mean that everyone finds them, but they do exist. Looking around me, I'd say that a relatively small minority of people actually find such a joyful and enduring relationship with someone else.

Most people can't handle being on their own too well, though, so they settle for something less than the ideal situation...maybe a good deal less. They may even settle for misery in company rather than being alone!

Me, I'd rather be alone any day than suffer misery in company.

As for the kind of relationship Virgina Tam describes...well, yeah, you're lucky, VT! I do not expect to find such a relationship anymore at this late date. I expect to be alone and to manage okay with it. I am complete, in any case. I don't require someone else in order to complete myself, but that doesn't mean I don't appreciate the great worth of what you have, VT. I was searching for something like that all through my 20s, 30s, 40s, and most of my 50s. I have now come to the conclusion that it ain't gonna happen in this lifetime, so I might as well be happy with what I have.