Whoever is my 100th like will be the first to see my very first Fan Fic!

It's not even close to done yet but I will keep your name in mind if you're the 100th like so I can tell you first. The thing I'm wondering is How can I tell only my 100th like, everyone else will see it if I make a post or a comment.

(I already know who will be the second, unless she is my 100th like, then she will be the 1st)