I'm not smacking you! Both of you chose to be in an adult, mature relationship. That includes being responsible. How is being out all night, letting your partner worry being responsible?
PIB, he lied to you. You said it in the statement that he knew for a week what he was going to do. So yes, he did act like a rebellious teenager.
I'm sorry I don't get the "vanishing" thing. Don't we all wish we could just disappear at times? That's kind of like wishing we could wave a majic wand.
Aside from the he could walk out the door statement, I don't see anything wrong with your conversation.
Bottom line? He needed to be considerate. You should not be left having an anxiety attack or worrying.
More importantly, why does he need to act this way?
When you can't make a decision because you are torn between your heart and your head, listen to the half with the brain.