There was a moment when I honestly thought my Fenris romance wasn't going to work out for Hawke. It wasn't when he left after they slept together. It was when he asked her what magic touched that it didn't spoil. My Hawke was just shattered. She was thinking, "There's no way I can be with this person if he thinks of me like that."
Buuuut... later, when he had calmed down, she asked him what he meant by it, and he responded very thoughtfully about Leandra's death and how difficult it was that Hawke's family had to live in hiding.
Hawke realized that she agreed with him. Magic had made her life harder. The point just got lost in Fenris being verbally aggressive and then Hawke being defensive. Once they talked, they were on completely common ground.
That tended to happen a lot with Fenris and my Mage!Hawke. When she took the time to actually listen to him, they weren't as far apart as you might expect.