u/Lol-Otter

Hello, I just started the game for the first time. I made my character bisexual, and my fourth and last son is gay. He's not married to anyone because I already have too many children. The only thing I can do with this son is seduce him for the sake of the game. Is there any advantage or benefit to sleeping with him?

I need dragon blood for my lineage and my Targaryen wife is near 45 and gave me only 2 daughters. The only way I see to perpetuate the dragon blood is to marry and impregnate my own daughter.
I chose the religion of the fourteen flames religion; I thought you could marry anyone in your family with this religion?