In our last episode, we looked at the technologies that are fundamentally changing biological reproduction. Now, we conclude that conversation with a look at the human relationship. What is a healthy relationship on Earth, and what might it look like in space? Or Mars? We explore the problems we're currently facing in love, and we imagine a healthy path forward: new paradigms for navigating conflict, an exploration of monogamy in the context of polyamory, and let's go ahead and talk about the heteroflexible astronaut. This is the future of sex.