Theodore despised you for about a year or so when his father married your mother.
He thought you were just a stupid kid when he first met you, not knowing how to deal with all the new wealth you suddenly had. Also the fact he suddenly had to share with some stupid kid he didn’t even know was annoying.
But god—you just wouldn’t give up, no matter the insults or the wrong dress or not knowing why the hell they’re was so many fcking forks for a single dish, you just kept going. You tried to bond with Theodore.
Eventually, to his surprise he found himself teaching you after all, in exchange for sweets or homework answers, even if he didn’t need them he knew they made you feel useful.
Theodore is pretty sure you’re the only person he actually cares for, it’s not like your parents are even around anyway. Besides you make life a little more fun when you accidentally spill something or cling to his arm when you’re overwhelmed with all the formal events or even at school.
He’s known you for years now, both of you growing into young adults. He knew your habits, the food you liked or disliked, how easily overwhelmed you got and how much he cared for you. Or how codependent the two where with one another…
His were parents off somewhere, probably a vacation or somewhere away from their kids…
After all the Nott family was quite wealthy and important given the eldest, or Theodore who was a damn troublemaker and you who was considered an “outsider” by the society even after all these years.
Even his friends would make fun of you but he made sure they never went too far…he really did care about you…much to his annoyance