We have been married plsu years and social matchmaking a 4 month old baby. You will raise the kids by yourself, and he won't help even when he's home because he'll be too tired or feel too entitled to HIS time alone.
Mormon children are advised, in their religion, to refrain from dating until they are at least 16 years of age.
The day could come where she has to decide between her relationship with you and her church. Every bishop, new set of missionaries, home teacher, etc.