Welcome Daniel -
Son run for the hills, stay far far far away from that cult. I'm sorry that you think you are in love, but you really don't want to get mixed up with these people.
Maybe she (your love) will leave them for you but I seriously doubt it. Before you know it you will be baptized, miserable, couple kids, have the elders all up in your bizness, and eventually may have your wife and kids taken from you by this cult and it is a CULT, born and raised in it, know it from inside out!!!
Please do not leave your family and friends for this type of life, you will regret it.
Sorry I'm not more positive but I know this situation very well.