Meet my half-brother

Saw him again at a different place a couple weeks ago. Wanted to talk to him but he doesn’t know I exist.

I’ve seen him. I know where he goes to school. I know his name. I’m just waiting for him to find my mom so I can meet him. He’s 18. We don’t even know if he knows he’s adopted. : ( Hopefully, he’ll come to the place my mom works during October every year again this year. He just graduated HS in June though so it’s unlikely.