Moving in

Hey guys. So my boyfriend and I are incredibly serious. We talk about marriage and kids all the time and there's no doubt in either of our minds that we're forever and going to end up married someday. I go to college in a town about 40 mins away from his. He's in the Air Force and lives on base. He's going to be deployed for 6 months starting March. Side note I'm gonna miss him so much and this is his first deployment so I'm scared I've never done that before. Anyways after he gets home he will be moving off base into an apartment. I still live at home with my family. We're both 19 almost 20. My family is very religious and they don't believe in sex before marriage and all that. I believe in God but I don't hold the same views as them. They don't really know that cuz it would cause a bunch of drama. However my boyfriend and I would like to live together when he moves off base. I love my family and I'm scared to tell them. Any ideas on how to make them happy and ok with this move. I would hate to cause drama or create a void with my family. The only thing I've thought of is eloping so it would be ok to them and then having a wedding later and for him and I that would be the real thing and the elopement would be just a "contract" (not the right word but still). Idk guys help me out here please. I love my family so much but I also want to live with him he's the love of my life and this is what I want to do.