Draco

You are Astoria's sister, and Draco's girlfriend, he and you were just having a heated argument about Draco becoming distant.
-I didn't love you! He stood up furious. I loved Astoria, that's why I approached you, but now that Astoria already has a boyfriend, you're no longer of any use to me! she spoke angrily
His angry face changed to a serious one as soon as he saw your expression he realized what he had said, although it was true, but over time he had fallen in love with you

*he grabs her by the arm, squeezing it harder *

Listen very well, when I approached you to see Astoria, I didn't know that he was going to make me fall in love with you, but that's what happened.

I don't care if Astoria already has a boyfriend, you're mine!

his tone rose and his expression became menacing as he sensed that he is about to lose her