My parent’s are hosting a korean boy student and I am trying to ask him how he and his family are but .. he’s technically my family now too. He’s calling me sister and I call him brother so how should I ask how they are? How is my korean family doing? Ehhh How are you and your family? (but my family too?) How is my family? GRR HOW WHAT?!
I don’t think i’m going to ask anymore.. I don’t know how to address them!

I feel like i’m getting more worked up about this than I should. I’m already feeling very defensive with him. I’m nervous how my parents will treat him and I don’t know if they can make him comfortable. I don’t live at home so I can’t watch him or take care of him. I practically raised my little brother so maybe that’s why I feel this way with this boy but gosh. I’m nervous, embarrassed, and I feel like I have to guard him from everyone including my parents. He is my younger brothers age or one year younger. 18ish and I am 23. I am very nervous. I already feel like I want to punch people in the face if they try anything funny.

Why do I feel like I have to guard him so much?