The Bible has a lot of great marriage advice that is still relevant today. In Genesis, God reveals that a man should leave his father and mother, hold fast to his wife, and that the two will become "one flesh." The Bible speaks of what sort of love couples should have for one another at 1 Corinthians 13:4-5 where it says, “Love is patient, love is kind. It does not envy, it does not boast, it is not proud. It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs." In Philippians 2:2, the Bible says "make my joy full by being of the same mind and having the same love, being completely united, having the one thought in mind." This scripture highlights the importance of thinking as a team. Be considerate - Philippians 2:3,4 says "Do nothing out of contentiousness or out of egotism, but with humility consider others superior to you, as you look out not only for your own interests, but also for the interests of others." The Bible says that husbands are to love their wives as they love themselves and that wives are to have a deep respect for her husband.
In fact, the Bible has verses that can be applied to every aspect of married life. I found a compilation here.