1. ‘Nothing planned’ means I plan to do nothing.
“Nothing planned =/= I’m free to hang out.
It means I plan to do nothing.”
2. I’m perfectly happy being alone.
“I’m perfectly happy being alone. Don’t try to convince me otherwise.”
3. Don’t ever ask me why I’m quiet; it will make me quieter.
“Don’t ever ask me why I’m quiet or remark on how quiet I am. I know I’m quiet and the awkwardness of your question will make me even quieter.”