Answers
My marriage is in trouble.
Start with the part you control, which is never nothing. Confess your own share first and without a but attached. Stop keeping score, because love does not. Get a third party in early — a pastor or a counsellor — rather than when it is nearly over; most couples wait years too long. And if there is violence, or the threat of it, get to safety first and get help; that is not a marriage problem to be talked through in the living room.
Go and see for yourself
Husbands, love your wives, even as Christ also loved the church, and gave himself for it;
Ephesians 5:25
Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
1 Corinthians 13:5
Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother's eye.
Matthew 7:5
And if one prevail against him, two shall withstand him; and a threefold cord is not quickly broken.
Ecclesiastes 4:12