But WHY no love between Damian and Ygerna?
It's a fantasy RPG ... don't forget "fantasy" is MORE than a "reality" can include
But that's MY meaning of such RPG-fantasy

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In fact Ygerna is the one who awakens the evil side in Damian when he was a child. So I my opinion is Ygerna more evil and took she possesion of Daniam's mind or something... She learn him to hate and learn him bad things ... and his own father, Lucian, become the first victim of all her evil things! Ygerna is a Black Ring member from the Divine Divinity Age