I think Hiccup and Astrid are the best animated couple ever.
I love how their relationship isn’t a major plot point for the films. Astrid isn’t there as a reward for the hero, she is his best friend (next to Toothless of course). She didn’t stop being a warrior after she became a love interest (and Hiccup wouldn’t want her to, he loves her for it).
They talk about their problems. They fight their enemies together. And they trust each other.
"They’re 5 years in, so the butterflies are gone. It’s nice to see a comfortable relationship where affectionate little touches or the way they sit together, has a comfort level to it and support. Astrid is the type of character that is not going to be afraid to call Hiccup on his nonsense, to be he reason when he is too absorbed in his own indecision. I think that’s really great. If anything…Astrid is saving Hiccup in this movie instead of the other way around."