Welcome to Reddit, the front page of the internet. I was off travelling the world when I met and fell madly in love with a deployed Marine.
You might need to trade missionary lessons for research on her part, and we can suggest less scary resources. The big one is that under Mormon theology both of you must be believing, fully active members to live together in the afterlife.
This can also be the basis for forming speed dating national luzern friendships, and learning proper skills for social interaction.