They got married the first time in Perisa, but separated at death like normal people do, but Dad soon lost that gig and felt a gravatational force in his life he couldnt define. It was mom, but they werent always happy to see eachother. And they didnt always understand eachother. One time Mom thought Dad was just a smooth talker, misenterpreted his bathroom habits and decision making process and when he came back in she decided surely he truely was a good person just like he said, and she let him prove it on her dinner plate. And he was right, she thought to herself as she sucked the bones, good and tasty.
Gramps knew who he was and what was going on when he said the only way to sort this out was to accept the perminance of the relationship and turn it into a good thing. There was a period of peaceful cooperation and education, but then it was time for things to change and the next few hundred years were pretty harsh, as he was getting her up to strenght to follow his path and be able to be his companion in all his adventures. Gramps cooperated with this process durring this time. But dispite all of this, mom wouldnt let go of him either. Its like a two ended gun, and while the women of the line will pull the trigger on it, the second end of the gun only apears for the right person. Gramps said it was an issue with our whole line, but I dont know the specifics about those women, and in previous encounters, born to other mother lines, mom didnt do that to dad, and I didnt do that to my husband before that either.
Dad was informed before he took on mom in this form and my husband was too, but like I said, the effect is on both, neither will let go and figting the effect of this is the same as fighting allah. He can change it, technically, but I dont know of anyone who has taken that even when he goes the whole nine yards on it.
Every kind of powerful transformation is aggrivating and leads to a lot of caterwauling, but if you are interested in taking over the world, there is no other way.