What is does Besos te amo Luna de mi vida mean?

Besos = Kisses

Te amo = I love you

Luna de mi vida is a little harder to translate properly. It literally means "Moon of my life." However just like sweetheart in English doesn't really mean you have a sugary-tasting heart muscle, "moon of my life" is not a good translation. This is a term of endearment such as Sweetheart.