"Okay, calm down."
Did anyone notice that in this scene, the reason Kristoff hits his head on the mountain is because he was trying to help Anna?
Do you see it? It’s only for one frame but he’s holding out his hand for her to make sure she’s going to be okay and to make sure that she’s not going to knock her head onto the mountain. And as he does that, he knocks his head instead, and doesn’t even complain like he would have in the beginning of the movie.
He doesn’t even know he’s in love with her yet and he’s still trying to protect her.
He’s already putting her needs before his.