Cofounder splits are the most common cause of startup failure [1]. Nevertheless you need a cofounder for countless reasons, primarily for perspective. Perspec

Cofounder splits are the most common cause of startup failure [1]. Nevertheless you need a cofounder for countless reasons, primarily for perspective. Perspective is probably what you're missing in this disagreement. Can you see the issue from your cofounder's point of view? What deep down in your cofounder do you think truly causes this issue? You (both) should have a mentor throughout the startup process -- this is a mistake I made myself until too late. Have (either of) you discussed this with your mentor? What does your mentor think? Last but perhaps most importantly: What are you legally (contractually) obligated to at this point in the venture? How is the company split and who owns the corp and IP? Depending on the legal structure you may have limited options for resolution. Best wishes, protect yourself legally but always take the high road in your founder relationship. It's like a marriage and there may be rainbows on the other side if you can learn to help each other through the low spots. [1] http://money.cnn.com/2014/02/24/smallbusiness/startups-entrepreneur-cofounder/ http://money.cnn.com/2014/02/24/smallbusiness/startups-entre...