HES YOUR BROTHER BUT HE DOESNT KNOW ((He doesn't know. Because you left with your mom. And after he had a serious head ingury that caused him to forget you. But the necklace hes wearing. He found. And you guys have matching ones. From what he knows its the last thing his mother made him as per being. Its the only necklace he knows of)) he was minding his business in the Hawkins high parking lot. Leant against his car. Smoking. Waiting for max to hurry up and get out of class he saw you