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This week, Joanna Robinson and I released what will likely be the very last episode of “A Cast of Kings,” the Game of Thrones recap podcast we’ve been publishing since April 2012. You can listen to it above. It got emotional.

When I first started podcasting, I was living my post-college years in Boston with my parents, financially supporting them with the money I made from an academic research job. This left me with a lot of spare time, so I started recording podcasts because I enjoyed talking about pop culture and building online communities around films and television. It was how I first encountered the work of Joanna Robinson, who at the time worked for a website called Pajiba.

Joanna’s work was insightful and trenchant, and I soon invited her to guest on the Slashfilmcast. I was impressed by her wit, humor, and perspective. We started collaborating together on a podcast about the FX original series Justified.

One day, she pitched me on the idea of a Game of Thrones podcast where she would take on the role of a book reader and help explain the show to me, a non-reading heathen. The idea for “A Cast of Kings” was born.

I don’t think we quite understood that we were tapping into three phenomena that would dramatically grow in importance in the years that followed: podcasting, explainer culture, and Game of Thrones. “A Cast of Kings” combined them all into one neat package. At the time, The Ringer wasn’t even glimmer in Bill Simmons’ eye, Vox Media had barely just started, and Game of Thrones was still being compared unfavorably to Boardwalk Empire in the ratings.

There are times when your can feel the tectonic plates in your life shift underneath your feet, when something grows beyond what you could’ve possibly imagined. As “A Cast of Kings” continued, it reconfigured my notions of what was possible with a podcast.

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I don’t remember the first time that I realized “A Cast of Kings” was bigger than any other show I’d ever done. It was more of a steady accumulation of little moments: an unknown friend-of-a-friend-of-a-friend mentioning the show at a social outing, getting featured on numerous “Best of” podcast lists, appearing on NPR’s “All Things Considered” to discuss the show, hosting a panel at Con of Thrones to chat with some of the great actors from the show. I learned that people who I respected and admired — people whose work I read online, who I regularly watched on television or whose podcasts I enjoyed — listened to “A Cast of Kings.”

These moments filled me with many emotions but the overriding feeling was one of gratitude. It is an extremely rare and beautiful thing to be able to create something that is meaningful to so many people. When something that significant comes along in your life, the best you can do is try to enjoy it for as long as it lasts.

I went through many life changes during my time hosting “A Cast of Kings.” I uprooted the only life I ever knew and moved to Seattle on, hoping it would change things for the better (it did). I got my first ever taste of life in the corporate world, which has enabled me to experience many incredible opportunities. I got married to a lovely woman who I met because she was a “Cast of Kings” listener.

Through it all, the podcast soldiered on. And there was Joanna, whose profile rose along with the popularity of the show. She went from a writer whose work was read by thousands to someone who was read by millions — one of this country’s most trusted experts on one of the most popular cultural properties ever.

It’s rare to find a person whose personality clicks with yours. It’s even rarer to be able to capture that magic, package it up, and put it out into the world in a way that other people can appreciate it too. But, that’s how I felt about my time working with Joanna.

I looked forward to our podcasts because I would always leave with something new — some bit of knowledge or insight that I never would’ve come up with myself. Her diligence, particularly in the first few seasons when I depended on her to illuminate the show and protect me from spoilers, was admirable. It’s that work ethic that has propelled her into becoming an online star in her own right. I was fortunate to be along for the ride.

And that’s where we are today. At the end of a long and crazy journey that has irrevocably altered both of our lives.

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One thing I’ve learned over the years is that it’s a miracle any good podcast survives. People’s lives change. People change. Few things stay constant.

Consider your own life: are you still talking to the same people you were 5-10 years ago? Is the state of your day-to-day existence the same? Throw into the mix strong personalities that are the ingredients of any good podcast and you have a recipe for an enterprise that is genetically engineered for a brief lifespan.

Joanna and I both have strong opinions, not just about pop culture but about ways of doing things. We sparred verbally on occasion, both on and off the show. But in the end, I think we understood how blessed we were to be involved in something that was helping to shape how so many people watched and enjoyed this beloved pop cultural artifact. For a brief moment in our lives we shared a partnership and an audience that became more than the sum of its parts. That’s part of what helped get us to the finish line. It’s also ultimately what Game of Thrones tried to do: to transcend its medium and become something more memorable and meaningful than we could’ve possibly predicted.

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Note: If you are a fan of my audio work, I’ll be launching a new podcast this month called Culturally Relevant, which will feature many of the conversations I have with interesting people around the internet. Subscribe now to make sure you get the first episode when it goes live.