Disclaimer; I don't own Dragon Age.
Doubt
Hawke never doubts that she's in love with Fenris, because doubt is for people with free time, and Hawke has no extra time to spend on pointless emotions.
She knows she loves him. She loves his awkward I-have-no-idea-how-to-respond laugh, and the way his eyes skim over her when he thinks she isn't looking, and how he fights like he'll never live to see another one. She loves the way his fingers feel on her palm, his actual fingers, on those rare occasions she can catch him with his damned gauntlets off.
She loves how completely vulnerable he is in his invulnerability, and the way he doesn't bother wasting time with pleasantries when there are bigger things afoot, and the way his smile starts in the middle of his mouth and then stretches along one side.
She never doubts that, because she doesn't have time to deny herself the simpler pleasures of her existence. And even if he never feels the same, she can live with that.
She doesn't have time to have a broken heart.