He may not, or he may and just be hiding that with other emotions.

[Suddenly caring about someone who you don't even know can be frightening, and that can easily lead to hostility.]

The person who was my sibling during the event, Adam, I had only spoken with twice before. So that's... Strange.

[He'd like Adam well enough from their conversations, but didn't really know him and, of course, has no siblings normally. So that whole thing is pretty strange for him.]