Do you remember the book Men Are From Mars, Women From Venus that came out in the early 90s? I've never read it but the premise of the book is that men and women are very different, and it gives advice on how to recognize and handle those differences. I don't think it takes much convincing, men and women are VERY different in many ways.
One of the beautiful aspects of marriage is we are forced to learn to love a spouse that is different from us. Jesus calls us to love those different then ourselves, even our enemies (which our spouse may seem like sometimes.) Here's the catch though... we CANNOT love God and not love our spouse. 1 John 4:20-21 says:"If anyone says, "I love God," yet hates his brother, he is a liar. For anyone who does not love his brother, whom he has seen, cannot love God, whom he has not seen. And he has given us this command: Whoever loves God must also love his brother."
The often times difficult job of loving your spouse is a treasure, that when discovered will lead you to a deeper and more passionate love for God (who is also very different then us.) The better you learn to love your spouse the more you will love God.
Loving your spouse well doesn't just enhance your relationship with God, it will also help you love others better. If we can't learn to love our spouse (who we've chosen to be with) then how can we love a prostitute, annoying co-worker, homeless person, obnoxious neighbor, orphan, know-it-all classmate, or that person with a lifestyle opposite yours?
Marriage is designed to call us out of ourselves and to love the different. How have you seen the love for your significant other affect your love for God or others?