Hi all, I need some help.
I have a crush on someone I’ve never met before and they don’t know I exists!

Basically for about 3 years now I have had a crush on a boy who appeared on TV programme with his family, the moment I saw him I liked him. Anyway over the last 3 years he’s stuck with me and I have managed to find and Successfully follow his two sisters on social media. I know it seems ridiculous and weird liking someone of the TV but after 3 years he’s still in my head! I want to send him a Dm so we can possibly connect however I have no idea what to put and I feel he will block me as he won’t know who I am and you only get one chance. If anyone has got to the end thank you! and please share you advise thanks🙂