Good for you! I think not reading his email is fine or if you want to read it, that's fine too. YOU get to decide. I'm the kind of person who often just walked away from toxic people because I didn't want to deal with a confrontation or any kind of messiness. What I've learned lately is that I have a right to let a toxic person know exactly what they did that was sooooo way out of line. I'm sure you have plenty of examples of his inappropriate narcissistic type behaviors that were out of line and insulting. For me, I recently sent a final email to a person who was trying to walk all over me.

Before the email, I let her know 4 or 5 times what my boundary was but she continued to trample all over it. So, when she sent me an email and asked me if I was "depressed" or ill because I was acting strangely, I calmly and very very clearly wrote her an email that told her exactly what behavior she was exhibiting that ticked me off to the point that I didn't want to be around her any more. I was polite but pointed in my descriptions and I told her that I decided that I no longer wanted to engage in any type of communication or in-person contact with her in the future. It felt great! It was freeing and it wasn't an infantile, bratty or crazy sounding email. If you think that might help you get closure, I encourage you to send him a very specific email about his behavior and cancel all future sessions. Good luck with whatever you decide! And again, congrats for being so strong and decisive!