If you’ve liked someone from afar and finally want to say something:
"Don't act like you know me. I'm just here to have a good time with my friends, so please step back." "You know my name, not my story. Let's keep it that way." You Don't Know Me
"Keep my name out of your mouth. You don't know me like that." Which of these fits the you're going for? You Don't Know Me - song and lyrics by Summer Walker If you’ve liked someone from afar and finally
If someone is being overly familiar or persistent, use this to set a firm boundary: You Don't Know Me
Use this for someone from your past who assumes you're still the same person: