I just saw the episode - didn't have any strong reactions to it.
I was just surfing the net and found this article
It discusses the genetic predisposition they talked about in the show.
In addition to that, I found it interesting how they talk about how "new and exciting experiences" or "self-expansion" as a couple can strengthen commitment.
The questions they posed: How much does your partner provide a source of exciting experiences? How much has knowing your partner made you a better person? How much do you see your partner as a way to expand your own capabilities?
Are some I have faced as a result of exploring nonmonogamy with my bf.
huh. I can answer to those above questions: lots, lots, and lots, respectively.