Marriage is about 'two becoming one.' Two lives becoming a single life. A common home, a common purpose, a common dream, common finances, common responsibilities, a common reputation… you get the picture! A single life, with two persons.
So here is whats required:
Firstly, sharing yourself with the other person, and secondly, learning to receive from that other person. Learning that what motivates you to say and do certain things, is not necessarily what motivates them to say and do those same things. Understanding and sharing what you are at the core of your personhood with your spouse, and allowing them to share with you as you seek to understand them.
Repenting of sin and offense on your part, over-and-over-and-over-and-over…
Forgiving sin and offense on their part, over-and-over-and-over-and-over...