Dear Kay:

If you communicate with him via email, it will be easier for you to express yourself calmly, responding a bit, taking a break, coming back to it, typing more, taking your time and eventually sending him a short and clear message that you think is just right.

If he contacts you, same thing- you can not take a phone call from him, if he calls, let him leave you a message and then respond to it via email.

Or do  it in person, your choice of course. If you choose to send him an email, when you are calm, when it suits you, you can post a draft here and I will be glad to give you my input on it.

anita