You always assumed that things were balanced, that you and he were equals in every way.
That, in the end, you two would always have something to lose, no matter what.
Oh but look now! Look as he dies in your arms, his last words slipping out in triumph. Remember the feel of his dead weight against you and know this; things are never even, they are never the zero sum you want them to be.
There will always be someone who has nothing to lose.