You have a really hard time communicating with each other, and end up feeling very frustrated on a regular basis as a result. You find that you just have two different ways of looking at things, both because of your different backgrounds and upbringings, and simply because of the individuals that you are. You disagree on many subjects, but instead of being able to appreciate your differences, you both view them as a challenge or even a threat.
Almost any subject that comes up serves as a basis for an argument, from the small things -- where to go for dinner, which movie to see -- to the bigger ones, like questions of politics, morality or spirituality. This is because you rarely agree on anything, and you just are not able to understand where the other is coming from. You each think that your point of view is the most obvious and correct one, and you wonder -- How can this person possibly think they're right, when clearly I'm the one that's right? You both are so closely identified with your own points of view that it feels like a question of honor to defend them. The tension in this type of situation usually only mounts; in the end, you just have to agree to disagree if you want to find any peace together.