# How to avoid a co-founder breakup before Series B

## Rituals to strengthen the most important relationship in your startup

[Thinking About Taking the Founder Leap? Here’s How to Prep for the Emotional Gauntlet](https://review.firstround.com/preparing-for-anxiety-of-becoming-a-founder/)

How to start building your emotional toolkit for the founder journey ahead, with advice from psychologist Dr. Emily Anhalt.

*May 13, 2025*

[The Founder Dating Playbook – Here’s the Process I Used to Find My Co-Founder](https://review.firstround.com/the-founder-dating-playbook-heres-the-process-i-used-to-find-my-co-founder/)

Gloria Lin opens up about her pre-founder journey, from how to find a co-founder and early conversations, to the set of 50 questions she prototyped to...

*September 30, 2019*

[How to Fix the Co-Founder Fights You’re Sick of Having — Lessons from Couples Therapist Esther Perel](https://review.firstround.com/how-to-fix-the-co-founder-fights-youre-sick-of-having-lessons-from-couples-therapist-esther-perel/)

Renowned couples therapist Esther Perel now has her sights trained on helping a different kind of pair: co-founders in the startup world. Here, she...

*December 02, 2019*

[Looking for Love in All The Wrong Places - How to Find a Co-founder](https://review.firstround.com/looking-for-love-in-all-the-wrong-places-how-to-find-a-co-founder/)

Steve Blank explains how entrepreneurs can use a tool called the Business Model Canvas to find the ideal co-founder for their startup.

*January 27, 2015*

[35 Impactful Questions Managers Should Ask Themselves Regularly](https://review.firstround.com/35-impactful-questions-managers-should-ask-themselves-regularly/)

We asked top startup leaders to share the questions they ask themselves to become better managers and assembled their answers into a can't-miss...

*May 16, 2022*

[Finding Language-Market Fit: How to Make Customers Feel Like You’ve Read Their Minds](https://review.firstround.com/finding-language-market-fit-how-to-make-customers-feel-like-youve-read-their-minds/)

After more than a decade of running B2B growth teams at PayPal and investing at 500 Startups, Matt Lerner now spends his days helping early-stage...

*November 09, 2021*

[Build Products That Solve Real Problems With This Lightweight JTBD Framework](https://review.firstround.com/build-products-that-solve-real-problems-with-this-lightweight-jtbd-framework/)

Drawing on her experiences building products at Lumosity, Oculus, and Facebook's New Product Experimentation group, Sunita Mohanty shares a...

*January 14, 2021*

[Radical Candor — The Surprising Secret to Being a Good Boss](https://review.firstround.com/radical-candor-the-surprising-secret-to-being-a-good-boss/)

Kim Scott cut her teeth as a manager at Apple and Google, and now helps create great leaders as an author and coach for companies like Twitter. Here's...

*November 24, 2015*