I promise everything (parody)

(with apologies to A. E. Housman)

I promise everything: to friends or art
and what will end, had to begin
as without truth or singleness of heart
I am a mortal man full of sin.

But this lucky love should not pass
when unanswered passion are in the air,
or I will with fate at last.
be able for once in earth’s foundation to care.