secret admirer? lol

I got a text saying "(my name) I love you" but somehow I didn't see the text in my phone until almost 2 months later. And when I tried calling the number an operator said something like "unavailable" or "unreachable" then when I tried calling again recently, the operator said that the phone was "power off"

does anyone know how I can find out who sent it to me? I know it can't be spam cause the person knew my name... and the reverse phone directories don't work...

thanks...