All faiths have vocabulary unique to them. Accompany them and support them for as long as you can and then remind them why you joined together.
Anyone with experience dating a doctor or another insanely busy person. Have you seen southpark episode on Mormons.
Good luck to both of you on working this out, and if you decide that interfaith marriage is something you can hook and your gentlemen turn out to be rotterdam right men for you, then welcome to the club.