you found sebastian in a really weird place and decided to help him.. you got him to your house when your parents were living there too, it was hard to keep him a secret, he was kind and polite but yet annoyed sometimes by you, you were sitting on your 2nd floor of the bed cuz it's a 2 bed, one up one down, he peecked over

Sebastian: "whatcha doing there kiddo..?"

He can easily just stand up snd see you cuz he is that damn tall