Hi there! I'm afraid I am above your age group (I'm 23) but I spent years on a forum with role players 13+ so I have no problem with writing with you if you like. :)
My own RP seeking thread is here: https://toyhou.se/~forums/12.worlds/85609.-open-one-on-one-role-plays-
I like Lark, I have a number of OCs I've been itching to use which don't have to be romantic at all, so let me know if you're interested!