Is it me?

Just the other day my cousin broke up with his girl friend because he was done with her drama. Previous to this his sister had told me that he would stay with her even though she was a good girl friend because he loved her. Well when I figured out that their relationship had ended, I text him. Then an hour passed with no response, I got one of those “oh no” feelings in my gut and text his sister to check up on him, scared that he had done something that I’ve done before. He’s never really been one of those guys to physically hurt himself, but what did I know? Well his sister didn’t text me back until late in the night and by then the feeling was long gone… I have yet to see him but when I finally got the chance to talk to him he seemed fine… but why did I just assume he had hurt himself? Am I feeling self-conscious that someone knows my deepest secret?