It is a struggle to find specific podcast episodes dealing with co-founder relationships. Many times you get small bits during interviews with entrepreneurs but not the entire story. Below are some great episodes that deal directly with how to maintain a healthy co-founder relationship as well as stories from people who had co-founder relationships break down.
ZenFounder: Sherry interviews Anders Pedersen about his failed co-founder relationship and what he learned. ZenFounder: An interview with Melani and Jeff who are married and founded a company together. This is a great podcast about navigating a co-founder relationship when you are also really married. I really liked this one as you get some great tips even if you are not actually married to your co-founder :). ZenFounder: An interview with Ian of Tropical MBA about his successful partnership with his co-founder. ZenFounder: An interview with Anthony of DNSimple about his challenges with his co-founder and how it fell apart and what he learned. Founder Health: An interview with a husband/wife combo who started a business and the impact on their marriage. This podcast is unfortunately not active any longer, and their web page is down, but you can still listen to them on Stitcher.
If you want to recommend a podcast or specific episode please send me an email.