The World reversed does not signify finality in the way its upright counterpart does. Instead, it speaks of incompleteness, of something left unresolved, of a story not quite finished. In matters of love and reconciliation, this can suggest that the chapter between you and your ex is still open, even if it feels fractured or uncertain. Asking whether he will come back under this card is asking whether the unfinished energy between you both can find resolution through reunion or acceptance.
In the journey of the tarot, The World is the final card of the Major Arcana, representing culmination, unity, and fulfillment. Yet reversed, it suggests delays, obstacles, or an inability to reach closure. When applied to your situation, it can reveal that the emotional ties are not completely severed. But whether they lead to reconciliation or simply a prolonged attachment depends on how you and your ex are willing to face what remains undone.