If you do, it's over. I can count on one hand the number of people who move out and then go back.
But yes, I would leave. Work out any financials now before things get bitter (snakes with tits remains true, I don't care how sexist it is), and remind yourself that you're doing this so that things can get better for both of you. Not gonna lie, you'll probably spend a few evenings on your own crying yourself to sleep, but I can promise you that you'll be a happier and better person this time next year.
If you ever need a sounding board from somewhere who's been where you are now, and I've some really fun stories about those dark days, then feel free to PM me mate. The offer is always there.
Exactly the same sentiments and offers here too, been there seen it done it etc.