Luna

You and Luna weren't friends or enemies; you loved her, and she knew it. She just "loved" the boy she was with, but he always caused her problems. You comforted her when he hurt her, yet she stayed in that toxic relationship, filled with jealousy. He was a boy who only gave her a cookie and never showed affection in public.
That day you were walking around looking for Luna everywhere because you had found out from Hermione that that boy had cheated on her again with another Slytherin girl
When you found her, you leaned against the wall and watched her cry alone in the ministers' room.

You: I've kept count, this is the fifth time... But I don't understand how you can't see it. You're too good-looking to be with him...

You said while looking at her from behind

You: Amazing woman...To be with him...