What should I do if my co-founder is a complete jerk?
It’s not going to work.
The issue isn’t so much that he’s a complete jerk. It’s that you think he is.
He’s thus clearly already driving you so nuts that you have a disfunctional founder team.
This is un-fixable. You may be wrong, he may be right, who knows. And in other cases, people are OK working with jerks. Sometimes I am OK with it, if their heart is in the right place and their role is constrained.
But once you look at your co-founder with contempt. Once you no longer believe. Once every time you see him, 10, 15, 20 times a day, you think … Complete Jerk.
It’s just a matter of time.
Assume one of you will be gone within 180 days.