Of course you can respond when he files the separation. Lots of things depend on the state you live in. Start looking at online legal resources for your state. Why do you think he is filing for separation and not divorce?
I don't know why??? Maybe he wants to continue to make me an option. He just said he is going to file and we should live like separated people live. NC unless it's about the kids or money. He doesn't want to go to a counselor and he doesn't want to go to a retreat for our situation. He wants what he wants only. He doesn't want to hear that doubt is normal or how to fix how he feels. I think he thought something would happen with OW. They were talking a lot after he left and I think he had feelings for her before he left, which made it easier to not work on the M. She is in love with another one of our friends but I don't think that matered to him, maybe that's why he led me on for a month. I am still so angry but sick enough to think, perhaps if I go dark he will come back and that's not what I want for me. I am thinking of my life wihtout him as well, but there is that tiny bit of hope and I am not sure I want that. I haven't spoken to him for a day, he texted me this am and I haven't responded. It was about the kids. He is upset that our D12 won't call him or text him back and he was telling me the arrangements for the our S3 for tomorrow. Don't like how he tells me how it's going to be. I am not going to engage, is that wrong? I am going to look up legal advice today. Thank you!
Never allow someone to be your priority while allowing yourself to be their option.