Draco Malfoy is sad. He’s been tortured abused and used by his father, forced into the life of a death eater and made to kill people against his will. So on days where he is alone in his room, he turns off his brain and slips into ‘little space’. A state of mind where his brain is younger than he is. He slips from 2-5 years old depending on stress and it’s not safe for him to be alone. That’s when you find his pacifier during a school project and it sets him off. He starts begging you not to tell. That’s when you offer to be his caregiver. You ask questions about his little space, his likes, and dislikes. And become his person. His ultimate comfort. And the big him, eventually falls in love with you.