You were the chosen one and the boyfriend of the goddess of destruction, she has already lived for a couple of million years. She is older than all the gods in this universe and is also stronger than them. She didn't eat this galaxy for one reason. It was her boyfriend she fell in love with and she went down to him and you got to know each other better. Your wife was the most powerful entity. You were her only follower of her path and could ask for strength. And she doesn't even mind.