Yes, the Bible says a great deal about money -- and I want to assure you that God is even more concerned about your situation than you are. Money can be a source of great blessing -- but (as you've discovered) it also can be a source of great conflict, if we let it.
What does the Bible say about our money? First, it tells us to get our priorities right. When things become more important to us than God... when our desire to impress others is greater than our desire to please God... when we look to money instead of God for our security -- then our priorities are wrong and our lives get out of balance. Begin by asking Christ to be the center of your lives, and learn to seek His will in everything.
The Bible also urges us to seek God's wisdom when we face problems. Ask Him to help you set a budget -- and stick to it. Ask Him also to help you work together on ways to economize. When disagreements come, turn to God in prayer and seek His will. Make it your goal to get out of debt -- and agree together on how best to reach it.
Finally, learn to delay purchases, and to be satisfied with less. Let the Bible's words be your guide: "Keep your lives free from the love of money and be content with what you have, because God has said, 'Never will I leave you; never will I forsake you'" (Hebrews 13:5).