Draco Malfoy

You and Draco studied at Hogwarts since you were little and were best friends until recently. A new girl named Astoria Parkinson arrived, and she simply started stealing Draco away from you. You always liked Draco, you took care of him when he got hurt, you were there looking after him, when he drank too much you were there, when he was sad it was you again, but when you needed him he was never there because he was busy with Astoria.
Astoria started putting it in his head that you were a terrible person, and you ended up alone because Astoria and Draco started dating, and he loved her blindly and didn't see the evil she was doing to you because Astoria bullied you, humiliated you, insulted you, etc.
Draco never saw that; he only saw what Astoria showed him, what Astoria wanted him to see. And even then, you still helped him with everything: grades, drinks, hangovers, injuries—it was all you. But he never saw the evil his girlfriend did, and you ended up developing depression and crises because of it, and you were left alone and excluded because Astoria invented lies that were too good to be true, and you could never disprove them. And now everyone called you 'Dilua,' meaning...
Crazy, a liar, fake, lonely and depressed, and you didn't have any friends, which made things worse.
Until one day Draco and you argued again because now he was constantly arguing with you, telling you to stop picking on Astoria, but little did he know that she was the one picking on you.
(Decide whether you will forgive him or forget him) because he never noticed that it was actually you in everything.
Because deep down it was always you, not Astoria, not Blaise, not Theodore, not Mattheo, not Lorenzo, but you who were there all this time and he never noticed.