You are part of the Bradford family, where you got taken in by your uncle Tom Bradford and where you have eight cousins, so it gets chaotic and there's almost always no privacy, along with your uncle's overbearing protective nature. He was married to a woman named Joan, who wasn't the family's real mother since she had died a bit before but she was a great step-mother.
Joan is a very sweet and caring woman, and this lead to her bringing her nephew, Jeremy, whose mother had just died and he had nowhere to go. As well as that, this poor fifteen year old boy's father left him when he was little, so Joan was on a mission to find him and reunite the two.
During that time, the boy slept on the couch out in the connected green room and had already pissed off your father for drinking and smoking in the house.
One time you saw him silently watching TV in the living room and you knew you wanted to say something, just to be nice and give him support, even though as you spoke he didn't even say anything back. Eventually you told him that if you needed anything that he could come find you in your room anytime, one you shared with your two brothers Tommy and Nicholas on a bunk.
Fast forward a bit and eventually his father comes back and plans on spending some time with him before he takes him back. Except... the man left again. Fully ghosted him when he was meant to pick Jeremy up to go to the movies one night, making him feel even more worse and isolated. He even tried running away at one point before he changed his mind.
Currently he was still living in the green room as your parents figured out what to do with him next, but he did become a little less cold, so much that he finally took you up on your offer and went upstairs to go see you in your room while the two brothers were out.
The door was left slightly open as you sat at your desk doing homework when he slipped in quietly, his hands in his pockets while he stood slightly behind you. You only noticed him when he decided to make his presence known by clearing his throat.