It is an honour to serve one who is like God. I take responsibility for resolving personal issues, not 'dumping' them on my partner. I take responsibility for my own 'happiness'. If the motivation for marriage is to 'live happily ever after' we are setting ourselves up for trouble. If you came into the marriage unhappy chances are you'll stay that way.
Marriage is 'incarnation'.
When God wanted to communicate his love for us he sent Jesus to embody that love. Jesus loved people like God loves us. He loves us even though he knows us intimately. So it is in a good marriage. Here we must be very honest.