You are a co-founder, not an employee. Remember that. It is you company, he works for you. If you would be hired in an company, would you dare to ask to the owner of the company to leave?? It doesn't matter how good or bad are you for the company, it is your company!
You are a co-founder, not an employee. Remember that. It is you company, he works for you. If you would be hired in an company, would you dare to ask to the owner of the company to leave?? It doesn't matter how good or bad are you for the company, it is your company!
Fire him now.