Writing my common app about online friends

I’m following prompt 6: Describe a topic, idea, or concept you find so engaging that it makes you lose all track of time. Why does it captivate you? What or who do you turn to when you want to learn more?

My topic is musical theatre, and someone I turn to when I want to explore it is a friend I “met” a couple years ago through Tumblr. In terms of identifying information, she knows my first name and my age. She couldn’t pick me out of a line-up, but we’ve talked about everything from our favorite shows to our insecurities, ideals, and goals. She probably knows me better as a person than people who know my full name and have met my parents. We are each other’s creative outlets, to the point where we’ve written a full-length novel together. I genuinely believe that we make each other better.

But also I know that people, especially people outside my generation (e.g, AOs) aren’t particularly trusting of the internet or the people on it. To be fair, neither am I. It took me ages to let my guard down with my friend and even now I try to remain as anonymous as possible. I just don’t want the AOs to think I’m an idiot for trusting someone I know only over the internet or judge me for not having friends in real life (because honestly I don’t). I don’t want to come across as naive or socially inept. Any tips?