Or: work at having those discussions, even if it's difficult at first and less enjoyable than other activities together.

Pray together, go to church together (yes, I realize not everyone prays and/or goes to church). Discover points of contention and find the time and will to discuss them in a manner that's constructive, even (or especially) if it takes several attempts.

Make friends and spend time with married couples in various stages of their married lives: recently married, with infants and young children, mature couples with teenagers or whose kids have flown the nest.

Be open to life, and encourage one another in the lifelong struggle to be less self-centered and more self-giving.