I love them subtlety of Gregory slowly warming up to Jacob and allowing himself to be in a sill friendship with him.
From Gregory roasting Jacob behind his back and judging him to him saying that he was "Bro-eing it down" with Jacob.
The slow and barely visible changes in his attitude and the way he talks to and about Jacob.
It goes along with his development into more confident and self-assured person when it comes to his likes and dislikes and his personality.
And it also shows how he gets more and more comfortable with people who accept him and he doesn't have to hide his neurodivergence.