It is a definite must. How could you ever get to know the person you are marrying if you don't know how they live and how they keep their belongs organized? Confliction comes from a change in life style. When two people move in with each other, it's safe to say that they can't continue in all of their habits. Without living with each other, you will never know how well or poorly you will adapt to moving in after marriage. Try it out. If it's working and both sides can live with each other, marriage will be the bond that will bring you closer. True love is deciding to spend the rest of your life with someone after seeing all their faults and bad habits. It's unconditionally love. Getting married means you are forced into living together; whether you like it or not. Meaning, if it is unbearable to live with your spouse, your marriage will end up with you being miserable or divorced.