Threesome

I love (too much)
in the heat (of a battle)
when they scream (my name)
loud and claw my back;
crazy, rough, sex (has become).

(Scars) from back before
(used to mean) all this mess
of (leaving).

(I loved) them
when I left them
and now I'm (never coming back);
too far gone.

Read all the words as one poem, then only the bracket words as another, then only the non bracket words as another.