As for the Mormon cohort he will be exposed to, I have two thoughts: And so far as I could tell, it worked and no one tried to drag her husband into the church.
We are alone for many months at a time. We should all remember this is a human being, and she has a brain. For men, this will likely come after completing your mission trip, so in your early 20s at the earliest.
I have days when I feel like I don't want to do this anymore, but then I go through old pictures and letters and to remind myself that we had it figured out once, and we can figure it out again.