Non amo te Sabidi,nec possum dicere quare.Hoc tantum possum dicere:non amo te.
In this poem,the final vowel of the word "Sabidi" is a long vowel "ii". Is that a vocative case's ending?And is the "Sadibi" from "Sabidius"?If so,why is it not"Sabidie"but"Sabidi"?