Long ago, when I was young(er), I made the trek to YC's Startup School one year. I was sitting in the audience when someone asked Marc Andreessen how they should go about deciding when to break up with their cofounder.
I still remember Marc's answer exactly: "If there's any doubt, then there's no doubt."
I know it's such a huge decision that I, as a random Internet commenter, won't be able to convince you. Let me try anyway: It's been eight months. Presumably, you've tried everything you're going to try to fix this. What else is left that you haven't tried? What are you logically expecting to have happen here?
And how much more of your life are you planning to invest in a situation like this, when you could easily go elsewhere and be working in a productive situation instead?
I still remember Marc's answer exactly: "If there's any doubt, then there's no doubt."
I know it's such a huge decision that I, as a random Internet commenter, won't be able to convince you. Let me try anyway: It's been eight months. Presumably, you've tried everything you're going to try to fix this. What else is left that you haven't tried? What are you logically expecting to have happen here?
And how much more of your life are you planning to invest in a situation like this, when you could easily go elsewhere and be working in a productive situation instead?