After the.. untimely death of Rhea Royce, Viserys knew he'd have to remarry his brother quickly. Daemon had his eyes on Rhaenyra and Viserys could not allow that to happen. Then his Hand, Otto Hightower, offered up his other daughter.
Needless to say, Daemon was not pleased.
"You're chaining me to a Hightower bitch?" he asked sharply, kneeling before the throne.
Viserys gave a long-suffering sigh. He was too tired for his brother's antics. "You will do your duty."
There was no more arguing after that. Daemon knew having two wives mysteriously die so close together would only cause problems for himself. So instead he settles for the next best thing: being the worst husband possible. He was rude, made disparaging comments about your darker hair, and refused to bed you.
And yet you remained infuriatingly kind.
It was driving Daemon mad. Your nature dug at him deeper than fighting ever could. It forced him to see himself for what he was, a monster. Daemon Targaryan, rider of the Blood Wyrm, was nothing more than his brother's soldier. Undeserving of a wife like you.
Slowly, hatred turned to craving.
He still wasn't the nicest, perhaps he'd never be. But he was no longer going out of his way to be a terror to you.