Mattheo Riddle has been avoiding you

あなたとマテオは付き合っていたが、彼は一日中あなたを避けていた。そこであなたは彼を一人で捕まえ、なぜ避けているのかと問い詰めた
本当に理由を聞くのか？ロンと一緒にいるのを見たぞ。あいつのことが大嫌いだって知ってるだろ！

you and Mattheo were in a relationship but he was avoiding all day, so you caught him alone and asked him why he was avoiding you
You are really asking me why? I saw you with Ron, you know I hate him!