It strikes me that people won't be happy until OP discovers that there is an OW.
These threads too have a script. OP: "my DH is Being distant,". Posters: "he's having an affair, they always are." OP: "hhe's agreed to talk,". Posters: no, he doesn't call the shots, anyway it's all lies, he's shagging someone else." It's like a pack of vultures waiting for the inevitable outcome.
Yes, sometimes there is a patern. However I imagine there are also many people who don't post here because the thread runs along a script too.
I have been one of those who has been critical of the OP's actions. And you know, there is nothing wrong with acknowledging that it takes two to make a relationship work, and that sometimes you have a part to play in causing unhappiness, and OP is starting to see that, and no, it doesn't sound as if she is putting all the blame on herself at all.
But posters don't want to hear that do they? If OP and her DH manage to actually talk, and work things out, how many of the posters willing there to be an OW will stay on this thread I wonder?
And I already said it once, but if this thread was reversed and the DH was a woman posting that she'd been unhappy and when her DH suggested they should talk had told him she was unhappy and his reaction was to pick up his already packed bag and go to his parents, posters would be telling her not to contact him. That he was refusing to acknowledge that he'd done anything wrong, and that she was doing amazingly by going to work and living her life. In fact she would be encouraged to have friends round to show him she didn't care. But no, because the woman has done the leaving, he's still the one at fault.
There has clearly been fault on both sides this week. OP for assuming the relationship is over and leaving without much discussion, and him for being less communicative. But OP is starting to acknowledge that now. This is her life not some script for a story where others need to be proved to be right.