[Rock]

Pretty much every long-term relationship I have ever seen has a dominant party.
My observation is that these relationships work better than ones where you have two parties who are both potentially dominant and seem to be forever vying for that dominance. Asserting themselves, if you like.
Sometimes harmony is about being willing to just agree, or see a different perspective rather than 'fight every point'.
I and my wife of 38 years share few interests and disagree on about 50% of things but we love and respect each other and that seems to make it easier to agree to disagree.
I see some people who last about a decade per relationship and just move easily on to the next. I haven't got the energy to want to keep forging new relationships (and halving my wealth every time)
Better to try to find out where the friction comes from and do something about it.