The Sebastian we meet at the beginning of the game is the one his parents raised, while the Sebastian after the Pensive is the one that was raised by Solomon.
Mc: I fell-
Sebastian: From Heaven?
Mc: No, I literally fell-
Sebastian: In love with me the moment you saw me?
Mc: MY ARM IS BROKEN
Sebastian: Okay but at least do you think I'm pretty? Be Honest.
YouTube suggested a video of a dance scene from the movie The Breakfast Club and I thought of the Hogwarts kids. The girls are the MC and my self-insert
To take the background went to take a picture of the library in the game itself
MC: Mark, my words.
Some random first year named Mark that MC found wandering the halls: *brings them their dictionary*
MC: Thank you, Mark.
Sebastian: (???)