He failed. All that work… all the sweat, and tears, and yes, blood. All the miles, and all the months, and all the people. And at the end of it all… he failed.
One sniff of Willow's scent on someone else and his hard-won control vanished like smoke. He has suffered pain, since then, and he believes he deserved it. She came for him with the others and wants him to stay, but he knows what he must do.
He knows his own tragedy, now. He understands. He did it all for her… and he can never see her again.