Rahner says, “if the ordination [toward the supernatural] cannot be detached from nature, the fulfillment of the ordination from God’s point of view is exacted.” Reno explains, “this obligatory or necessary fulfillment violates the logic of love. There can be no ‘must’ of this sort in the relationship of self-giving.”

Sed contra. There is no external must in love, but a love without an intrinsic must - a must of continuing love, of faithfulness, of endurance toward consummation - is hardly love. Would God love the world if He created and then abandoned it? Must He not continue?