Here's what you need:
1) God as the center of your marriage
People treat marriage as a personal choice or preference like choosing a car, or what to major in for college. Marriage is a sacred covenant instituted by God, and it is a vocation (a life-calling). With it comes certain responsibilities to both God, your spouse, and your (potential) children.
Marriage is the union of a man and a woman, joined for life, wherein they pledge not only their mutual support and fidelity, but also freely give themselves to each other and are open to procreation.
By making God the center of your marriage, you are seeking and acknowledging His will for you, you and your spouse are praying together, going to church together, and growing together.
2) Love
You need more than just romantic love. You need AGAPE love. In classic Christianity, love has often been defined as "willing the good of another." To love your spouse, you need to will his (or her) mental, physical, and spiritual good or well-being. St. Paul tells husbands that they must love their wives as Christ loves the Church--willing to lay down their lives for their wives. This love also includes patience, compassion, forgiveness, and faithfulness.
3) Compatibility
He may be godly, and you may be godly, but also pay attention to compatibility. How are your views on child-rearing, on being a stay-at-home parent or both parents working? What are your financial habits like? Are you frugal and your partner a big-spender? Are you a neat freak and your partner a slob? What are your temperaments and personalities like? Introvert vs. Extrovert? Hot-headed or cool and collected? You don't have to share the same hobbies or interests, but are there some activities you enjoy together as part of your bonding? Also, consider if you're going through this thinking with a clear head--if he shows signs of infidelity, abusiveness, addiction, etc. these are red flags and do not assume that marrying him will calm him down or change him. Use common sense (and it's easier to use it when you're not entangled in pre-marital sex).
4) Communication
Men and women think differently, and sometimes the differences can cause misunderstanding or friction. Sometimes something that doesn't seem like a big deal to him was an event that hurt your feelings--talk to him and explain. Guys don't know how to read minds, so 90% of the time if you want him to do something, you need to plainly tell him.
If you tell your guy about a problem you're having, most likely, he'll assume you want him to do something about it or try and fix it--they don't hand you a tissue and chocolates like your girlfriends would. If you don't want him to try and fix it, let him know you're just looking for a sympathetic ear.
Guys like to feel respected and useful, especially to the women they love.
No secrets. No lies.
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