I agree with labug. You're probably going to be tempted to try to convince him why he's wrong and should stay with the M. That's what I did the first few months after it happened.
Even after a year, I have to remind myself that "those convinced against their will, are of the same opinion still". If he's going to change his mind, he has to do it himself. No matter how logical or sensible your argument is for staying together, it is going to mean nothing to him right now.
I'd also advise keeping your library books somewhere H can't see them. He might get the wrong idea from the titles such as DR or DB.
Maybe every time you're tempted to start a conversation with him, you can drive to a coffee shop to hang out for an hour or so and just read your books instead. That'll keep you from saying something you might regret later on and keep you out of the house for awhile. And if it makes him wonder where you're going and how you're spending your time without him, so be it.
M36 XH34 M-5 T7 4/11 H confused 5/11 ILYB 6/11 OW discovered 7/11 I move out, OW over 5/12-OW2,done->new EA, but H wont file 9/12 H "best bf ever" to EA/OW3 3/13 H/OW break up H files 4/13 D 6/18/13
He asked if he should go live with his work friend for awhile. I told him it wasn't necessary and we could go back to living in different rooms if he was fine with that. He said he was. He's moving to Australia in December, with or without me.
If you can afford it, I'd say to go, even if it's just you. If he decides to go too, great, if not, it'll still help you to figure out what you need to do to for yourself.
M36 XH34 M-5 T7 4/11 H confused 5/11 ILYB 6/11 OW discovered 7/11 I move out, OW over 5/12-OW2,done->new EA, but H wont file 9/12 H "best bf ever" to EA/OW3 3/13 H/OW break up H files 4/13 D 6/18/13