I can just imagine
After the war, everyone becoming friends and Draco’s line of “My father will hear about this” becoming an infamous joke. Harry and Ron teasing him with it; Pansy, Theo and Blaise adding fuel to the fire with stories from their childhood. Draco hates it but his best defense is only ever “I said it a COUPLE TIMES! Get over it!” And everyone just looks at him like 😒 “a couple times?” And it never gets better but in the end it becomes endearing.
One time while they’re out for drinks Ron uses the joke and Draco realizes the ginger is using it as teasing banter, not a low-hanging insult and he tosses back a bitting quip that’s met with laughter and another round.
“Is your father going to hear about this?” Harry asks as they’re both catching their breath in a dark hallway, shoved against the wall.
“Not until I know you’re never leaving me.”