My Journey from Childfree Identity to...Whatever This Is

I'm moving in with my boyfriend in a few weeks. He has two kids. I'll be co-parenting 50% of the time. And suddenly, I don't fit neatly into any of the boxes I thought defined me. The child-free community probably sees me as a sellout. The moms are like, "But you don't have real kids." So where exactly do the people like me go now?