@Armitage, I can tell you how I was married to my Supervisor (from another Quadra) for many years, and for many of those years (the early ones, mostly), I was very, very happy.
I think my satisfaction came from two places. One, my parents were both Delta and I thought, like a wolf raised by ducks, that one day I would learn to fly, because they can do it, so I can certainly do it, too. You absorb the idea that the values you live with are the best ones for you. It's unfortunate, but true.
The second reason I was happy (for a few years) was that we were building a life and a family together, and that's exactly what an LIE and ESI do together. The problems arise when you realize that the other person's ideas of what constitutes a life and a family are very, very different from yours.
When my marriage failed (due to no fault of her or me, but rather due to our differences), I did the NT thing and went out and bought about thirty books on "How to Make a Long Term Relationship Last", and "How to Save This Marriage". Many of the books (not the best ones) recommended overlooking your partners faults, and that's exactly what I did when I was married. There was a lot of good in her, but there were also a lot of things that I didn't like, and in order to stay married, I had to "turn off" those parts of me which conflicted with her.
Let me say that again. In a long term relationship between two people who have different values, you have to turn off parts of yourself in order to get along.
Well, I decided that I didn't want to do that, so I filed for divorce. I mean, I realized that I could do that, but I didn't want to, and because there are healthy Duals out there, I don't have to.
One thing I should add about my deciding to get a divorce, is that when I made that decision, I wasn't in my twenties anymore. I felt that I was really too old to ever be in a relationship again, and I thought that it was a near-certainty that I'd never have sex again. However, the pain from the prospect of being alone for the rest of my life was less than the pain of staying married to a person who, I came to realize, didn't like me that much. And once I realized that, a switch flipped in the relationship. I walked out of that door and I never looked back.
I didn't anticipate that, three months after the divorce, I'd have a new GF who treated me much, much better. That was a nice outcome, but it wasn't something that I ever expected to have happen. (She was LSI, and THAT relationship convinced me that Socionics is true and that 3D Se and 2D Ni is just exactly right for me. )
Which is the reason I'm looking for healthy Duals. Only healthy Duals. I've had non-Dual women on dates tell me, "I've very good at sex, you know!" Well, great. You need to find a Dual who will be able to appreciate the rest of you, because that's not me.