How do I say you are dead to me in Latin?

Latin for You are dead to me is: Mortuus es mihi. Or in English grammar Dead (you) are (to be in the state of) to me (da. "to me") or (you) are dead ("to me") me. The da. stands for the Dative case (to/for me), and the parenthesis indicate information or optional pronouns because you don't have to add pronouns in latin:) Another way to say this (totally optional), is Tibi mortuus es mihi ad, either one works:)