Some Albus x Karl dynamics before getting together
Because @rigeljayy is having an influence on me with the two. Also I have a headcannon that Karl blushes easily, which Albus finds both amusing and hilarious.
Karl: You really think I’d ever like someone like you, Potter? It’s disgusting.
Albus: smirking Sure, whatever helps you sleep at night. You do realize you turn bright red every time you even look at me, right?
Karl: I don’t care what you think, Albus. I’m not some queer to fall for you.
Albus: Oh, don't worry, Karl. No one's expecting you to fall for me. But the way you act... it’s almost like you do. chuckles Nice blush, by the way.
Karl: I don’t like you. And I’m definitely not interested in whatever nonsense you think is going on here.
Albus: No one’s asking you to be interested, Karl. But every time I walk by, you look like you’re about to combust. You should really work on that blush.
Karl: You think I’m a fool, don’t you? I’d never be into someone like you.
Albus: smirking No, Karl. You’re not a fool. Just an incredibly obvious one. The more you deny it, the more I think you’re into me.
Karl: I’d rather die than be in love with you, Potter.
Albus: That’s funny, Karl. You’re already dead in the face every time you try to act tough around me. Those blushes aren’t fooling anyone.
Karl: Stop looking at me like that, Potter. I’m not that way.
Albus: Oh, I’m just admiring the way you blush like a tomato every time I talk to you. You might want to work on hiding that, or people will start to get ideas.
Karl: You think I like you, Potter? What a joke.
Albus: grinning Oh, trust me, Karl. If only you knew how funny it is to watch you dig yourself deeper. The way you go on about how much you don’t like me—your face gives you away every time.
Albus: You’ve been glaring at me for ten minutes. Are you sure you’re not in love with me?
Karl: turning red Shut up, Potter! I don’t like you!
Albus: Keep saying that, Karl. It gets more amusing each time. Also, the red face? Perfect timing.