Need Advice, In the 180 Zone & Don't Want to Spoil It

I am needing advice on exactly how to respond to a text from WH. I am so in the 180 zone, and to be honest I already feel better having a little steel in my spine. But I need to lean on you folks to keep me steady. A little back story. I drew the line in the sand 10 weeks ago. That was, or what I thought at the time, was going to be my final D-day. There have been previous D-days. I was ready to end it then, but WH insisted that we see a MC as a last resort. We have been married 32 years and should have been to counselling many years ago. I agreed to MC. WH has been a 1000 times more open and communicative in the last 2 months than he has been in 30 years. Reconciliation actually looked like a possibility. Long story short …. Yup, you guessed it …. Another D-day. He has had contact with the OW. I discovered this on Friday and asked him to move out. He did yesterday. I received a long text from him last night telling me how horrible he feels and how bad he misses me and how he knows how much pain this has caused. I have not responded to the text yet. I don't have any problem never responding to the text. My dilemma is that I don't want him thinking that my non-response is anger or punishment. I want him to know that I am okay without him. I have read and re-read the 180 list. It says not to focus on myself when communicating. It also says do not believe what you hear. I feel like if I ignore his text he will think I'm sitting in the house crying my eyes out. Ok, well I have been a little bit, but I don't need him knowing that. I want to let him know that I am ready to set him free and I am ok with that. Is it okay to say that? Would that be appropriate? I don't want to get this first response wrong. I want to set the tone. I don't want him to hear anger, or sadness, or neediness. I want him to only hear confidence and strength with no hostility. Thank you for any advice on this.

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