Between Worlds is a dual-timeline series about two teen girls—Juliana and Elisabeth—who grow up a century apart. As much as I wanted to explore how teens have lived differently, I also wanted to provide a series that didn’t try to convince girls that a boyfriend was needed to have a fulfilling teen life, a series of YA Books without romance. So, how does that play out in the series? I explain below.

I had my first boyfriend when I was ju...