Christian Husbands and Wives

Today and last Sunday our sermon theme has been Christian husbands and wives treating each other with Christ-like conduct particularly when the marriage is going through a trial. In 1 Peter 3:1-7, the wife is to submit to her husband even if he is not treating her in a Christian way. And the husband is to have an understanding attitude towards his wife including showing her honor as his wife.
We live in a culture that is pro-divorce and anti-godliness. Question: What are specific things a Christian husband can do to help keep his marriage godly strong? And what are specific things a Christian wife can do to keep her marriage godly strong? I would love to hear from everyone. Maybe your suggestion could help strengthen Christian couples. Singles you are invited chime in. Thanks for taking the time to respond!