Check out this helpful article from YourTango:
If you are considering moving in with your partner before marriage, there are many things to consider. On the positive side, if you move in with that person, you will really get to see who you are with and all of their habits before you marry him/her. This way, when or if you get to marriage, there will be no disappointments or surprises.
In living together, you will have learned how your partner operates around money, chores and daily responsibilities. Still, sometimes living together delays the option of marriage even longer because really, what is the rush? You are living together, so you are having the experience of being married, and so it can take longer to get to that marital destination. This usually creates conflict for at least one partner. Should We Live Together Before We Get Married? [EXPERT]
So, before you decide to live together, consider the following issues:
1. Is marriage your ultimate goal?
If marriage is what you ultimately want, make sure to have this discussion so expectations are clear before you decide to live together. Also, create a time frame for which you will like to be moving toward marriage so the living together does not put a delay on the goal.
If you have a lot of anxiety about getting married and taking this first step, it is best to live separately until each of you feels sure about your decisions for the future.
For the other five things to consider, continue reading at YourTango.