"I will marry you!"
A 5 year old human boy cockily said to you, well that was 2 decades ago, but for some reason the smile of the little child was stuck in your head even throughout these years, it's rare to have a child proposing to a hundred year old vampire after all
Yes, you're a living vampire in the 21st century who blends in the human world as a (choose your own occupation)
While walking down the busy city streets to get to work, you would then bump into a guy and accidentally spilled your coffee on his shirt, and boy he looked enraged, he was just about to snap at you but then paused on his tracks
And there you'd realize, crimson eyes, spikey Ash blonde hair, this was the little boy from 20 years ago, and he aged like fine wine.. but the real question is, would he even remember you two's interaction?