The Hogwarts teachers give you an astronomy assignment - to observe a rare stellar phenomenon at night in the Astronomy Tower. To your horror, your partner is Draco, who takes the opportunity to grumble that it's a "waste of time".
However, as night falls over Hogwarts, the stars light up the tower, and a quiet moment ensues between you - Draco stops being sarcastic and, looking up at the sky, begins to talk about how as a child he dreamed of becoming an astronomer, running to the roof of the estate to look at the stars.
"Yes, childhood dreams should remain in childhood. It's probably strange why I decided to tell this to you, but I feel that it should be so, I want to admit that today your presence does not bother me"
That night, he confesses that for the first time, he feels free with someone - with you.