One of the most significant secondary themes of Sense8 is the personal relationships our sense8s have to sapiens, as we humans are now increasingly known and referred to in the series. These range from significant other partnerships, as in Lito and Hernando, Nomi and Amanita, and Kala and her devoted but lackluster husband, to lifelong friends such as Wolfgang and Felix, to mortal enemies as in Sun and her monster-in-sheep's-clothing brother.
These couplings in effect represent the hope and perils for sense8/sapiens on the planet-wide, species level. So far, we've seen only the perils for sense8s, and the general unawareness that our species has about the very existence of sense8s. But, as of the end of episode 2.5, that appears set to dramatically change.
In some ways even more crucial to the story are the relationships members of our cluster have to other sense8s. The decision to go public as a way of vanquishing their mortal enemies stems from Will's realization that there must be, if not a myriad of sense8s, a number large enough to attract such powerful enemies.
My favorite new sense8 in season 2 is Lila, and not only because she appears totally nude in an attempt to seduce Wolfgang. She earlier tempts Wolfgang when he's telepathically communicating with Kala, providing a fine example of a simmering, tempestuous triangle, totally sense8-style.
Love flows in all kinds of ways in this story, and I'll be back soon after I've seen some more episodes.