Ok, it's just that he changes his mind so often. Once he started a skype conversation saying "there was no us" and 10 minutes later enthusiastically making plans (that was 1 week ago).
The break-up letter was written when he had stress with his dad, no job, no date to start rehab and he was angry because of our fight so I wonder.

He clearly wants to stay in touch but I can't just wait around.

So you think I shouldn't send anything and wait for him to contact me?
He's very stubborn. And I don't believe in the NC rule. Not when someone is angry at you and may brood.

Besides he may think that I don't give a rat's *** if I wait too long.

So to end second guessing I'll send that email. Be it only to see what on earth he means to stay in touch with someone who doesn't want to be friends.