Four weeks in, hopeful but just starting!

[KGirl]

OK, I'm in need of help here..
Can someone, anyone, convince me why it's a good idea for H and I to continue to leave together and/or tips on how to do so without losing my mind? He has no inclination to leave, and still has not made any steps or conversations in any direction. Last conversation on the topic of R/M/D several weeks ago was that his decision to D was firm and nothing would change it. I'm having a VERY hard time trying to stay positive while still in the same house as him. I'm doing my best to GAL and that helps when I'm gone, but sometimes I just want to come home, kick my feet up, and watch TV. Or maybe make myself some dinner. Or other normal things that you just want to do in your home and feel comfortable! And he never goes anywhere besides soccer for an hour a week, so I can't get any "alone time" to just relax. I don't know how much more I can take of this without snapping and asking "what the heck are you doing?!" What makes this more stressful I guess is that it's not easy where I live to just move and find a decent apartment in a couple of weeks if things were to go majorly south. I live in a college town and most leases, at least for locations that allow me to take a bus downtown where I work, start in August, so the only things now are subleases. I've poked around online a little bit and haven't found anything that I'd consider living in. I even called the apartment we lived in before we bought our house to see if they had any availability and they said May at the earliest. I just feel so stuck and powerless. Someone said above that you can do 90% of your moving on while still married...but I don't know if that's true while you still leave together. Advice, anyone?! It's so hard to keep up the "act" of being positive when I'm so angry at him, and I don't know how to make myself more genuinely happy while here.