Move in with bf before or after marriage??

So my bf and I have a reaccuring conversation... whether to move in together before or after marriage. He says he wants to make sure he gets along with someone before getting married, therefore move in before. I personally would rather wait till after marriage. For religous reasons, and the simple fact of wanting being married to be different than dating. It would be something more to look forward to... especially since I dont have my virginity for marriage anymore... what do you all think?!?!?