In the challenging world of startups, co-founder relationships are often make-or-break. A common, yet painful, question many entrepreneurs face is: What's the definitive moment you know it's time to part ways with a co-founder? According to one experienced founder, this critical juncture has presented itself twice, each time signaling an irreparable breakdown in commitment.

For this founder, the undeniable red flag was consistent: a co-founder's failure to attend a critical meeting. This isn't just about missing an appointment; it's a profound indicator of disengagement.

Founder conflict is an unfortunate reality in the startup ecosystem. While the author's first venture was blissfully free of such issues, subsequent experiences have always involved some degree of friction. Ultimately, most co-founder disputes boil down to asymmetric commitment – when one partner is significantly more invested than the other.

Navigating a situation where your commitment outweighs your co-founder's is tough. The advice is to try to make it work, especially if the co-founder is exceptionally talented. Even a 95% commitment from someone who can "do magic" might serve as a viable bridge strategy for a period. However, anything consistently below that 95% threshold is deemed unsustainable.

The classic, unfixable sign, however, remains the unannounced absence from important engagements. No prior notice, no email, no Slack message – just a complete no-show. This isn't typically born of malice or poor calendar management; rather, it's a clear manifestation of disengagement. Showing up is a fundamental expectation for founders.

While such absences might stem from stress or a need for a break, the author's hard-learned lesson is clear: once this sign appears, it's often too late to salvage the partnership. It indicates a fundamental lack of the minimum commitment required to succeed. At this point, it's imperative to recognize the situation and pivot to Plan B.

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