Here's a pithy article that may re-route your life from heart-wrenching disaster to fulfillment in companionship. The New York Times has published fifteen questions couples should ask each other before getting married, or entering any very serious relationship. Relationships, for better or worse, often boil down to a partnership, not unlike a business. The best business have clear goals, a good plan, and effective commutation. Your relationship should be no different--minus the fraud--with the addition of a lot of romance.
Anyway, take a quick read, here, write the questions on your hand and casually bring them up with your significant other the next time you're out to dinner.