A person with North node conjunct Mars is like a wild stallion who will only do well with another free spirited strong natured personality like themselves.
Even then, conflicts and quarrels are inevitable. Even with the best synastries and aspects, ‘guna’ matching etc.
Why?
Well to begin with, Mars is a very individualistic planet and people with a strong Mars or prominent Mars are usually very good at individualistic professions like Entrepreneurship, Sports, Medicine, Performing arts, Politics etc.
A strong Mars can give the native a strong career in a variety of fields not traditionally associated with Mars. This is because Mars is above all, the energy of ‘dominance’ and you can harness this energy to be dominant in any field you are naturally aligned towards.
Secondly, dealing with ‘conflict’ is an intrinsic part of this individual’s life journey.
So if you’re the kind of person who can’t handle conflict or imagine married life to be a breeze that you just surf, sorry this individual is not for you. In fact, run in the opposite direction. That’s not the theme of this conjunction.
Lastly, Mars is the energy of desire and sex. It has sudden ups and downs.
So you either are compatible physically or you aren’t. It’s really that simple. Mars dominant people don’t have a lot of patience to put up with things, situations and people who don’t gel well with them.
I’ve seen many people married to Mars conjunct North node people and their marriage is like fireworks in the bedroom and it’s good for them, they like it, it works. Simple!
Then I have seen people who just couldn’t keep their marriage together because they never felt ‘fulfilled’ in the union. This turned them off and shut them down completely to a point they lost interest in intimacy. However since it’s a North node conjunction, obviously you can’t control it and then it all comes rushing it out one day and you may end up acting on your impulses in a way that is regretful.

