You are a YOUNG man, with balls working overtime.
When your brain is SWIMMING in a stew of testosterone, the little fella "down there" will drag you around like a bull with a ring in its nose.
"ONLY by putting your penis inside THIS person will you be happy" - goes the siren call. This is an instinctive drive to ensure you share your DNA with somebody outside your usual gene pool.
YOu will NEVER be first in her life - Always it will be the wonderful ORGANISATION, the elders her judgemental family (they just act as if they are not) before you.
If you have kids and one has an accident, will you fight her over the blood transfusion, or just go along and your child dies?
Remember HORMONES are behind a lot of your ability to discount the negative that shows mating with this (albeit charming) would be a disaster down the road - but by then the DNA is mixed and there are kids to consider.
RUN! Before her guilty conscience starts messing with your head.
Forgot to add: The elders will want to know what you do in bed. They have spelled out what positions and acts between husband and wife are abhorrent to Jehovah (He sits by the bed and watches) Then if they find out, they will excommunicate you, and you will lose all your new family and friends after having been "ENCOURAGED" to get rid of all you non-believing non-judgemental friends.