How to proceed with angry, almost-walkaway H?

[maji]

Help! H just gave me the "I can't do this anymore. I want to move out" speech. He said despite my changes he does not feel the "spark" and it's awkward to still stay together when he doesn't have feelings for me. What do I do next?

I think it surprised him that I was calm throughout and told him that I understand and support his decision. He asked, "So what should we do now?", to which I replied, "It's not for me to say. I'll cross the bridge when I get to it. Just know that I see many options for us, but if you think this is the only way, I support you."

But I backslid slightly afterwards when:
- I asked him to tell me everything he's unhappy with about our relationship -- issues that he didn't list on BD day.
- I said (calmly) that I understand how he feels but I'm disappointed that he didn't give our M the one chance that I asked for. (he said he gave me many chances in his head before BD - typical WAS)
- I asked to be treated with respect from now on b/c I'm hurt by his behaviour the past month (mean and cold). He apologised and said ok.
- Finally, I asked if he's still in contact with OW. That's when he raised his voice and said "No, I'm not. I knew you'd mention her. Do you have proof!?" Although I was very tempted to confront him with all the evidence I have, I didn't push it and walked away.

Argh... Hope I didn't ruin everything with my questions... I need advice on what to do next:

1. Do I do the LRT immediately or should I continue to DB? It will take him some time to find a place, he said.

2. Part of me want to guilt him into giving us a real shot, without OW in the picture. But I shouldn't apply any pressure, right?