Dustin quoted The Churn by James S. A. Corey
Her appearance and the reticence she and Timmy had to making her explicable were as odd to Erich as if lobsters had crawled up out of the sea and started speaking Spanish. And yet if they did, what could anyone do but answer them, and so Erich and Lydia reached the odd peace of roommates, intimate in all things and nothing.
