I put RL friends for who I like better just because I have the thing you do--where there's not really a line? I have a lot of friends who I met through fandom whom I know in real life. One of my best friends I met in fandom but we don't talk about it much and have never met. Some of my met-in-person friends are fandomy but that's not how we got to know each other and it's not our main conversation now. And you know! They are all my real life friends!