In particular, you can use it to persuade Isabela to teach you to be a Duelist without playing her game.Accidental Pornomancer: On numerous occasions, you can actually use sex or marriage as a bargaining tool.
Their father abandoned his family to go to the surface, after Kalah refused to come with him to seek a better life from Orzammar. You can even achieve it with every single one of them at the same time, though most of them will be a strictly platonic adoration.