“Bears it out” – purposefully ambiguous. It means that faithfulness ‘to the edge of doom’ is in itself the proof of its truth. It also suggests that love is almost a challenge – one has to ‘bear’ it out or endure it, because it involves sacrifice, grief, compromise, disappointment, fear — an endless list derived from the complexity of human relationships. Alternatively, this may also be an intertextual reference to 1 Corinthians 13:7 “Love bears all things”, meaning that love triumphs over hardships such as those named above.