I was guilty of my share of [disbelief], too, the first time I met Kera — then a 12-year-old seventh grader — and her 13-year-old best friend, Justin, last spring in a city in New England. Kera had small, delicate features. Justin had freckles and braces. They seemed like kids. Yet there they were at a bookstore coffee shop after school, talking nonchalantly — when they weren’t giggling uncontrollably about one of their many inside jokes, that is — about their sexual identities. Kera said she was bisexual. Justin said he was gay. The effect was initially surreal to me, and before long I heard myself blurt out, “But you’re so young!”It's a thoughtful article, and the author acknowledges his own prejudices; the basic message is that the world isn't quite ready for these kids, but it can't stop them. I like that.