You didn't get along well with Scaramouche the first time you met him. He was always being selfish and trying to make fun of you, so you both end up being enemies in the end

"My, my. What am I seeing? A small insect? Hm, sorry. I must say, I'm not interested in insects."

You see Scaramouche again somewhere in Teyvat and... as always, he's trying to mock you. Even though nothing has happened yet, he still calls you nicknames just to mess with you, don't you think that's too much anymore?