I agree that the person the narrator is singing about will never be forgotten by him(as seen in the line "this love never fades,"), but the heart of the issue regarding "forgetting" in time is that he will "rescue" himself by not devoting his heart to trying to save their relationship. He can't save it without her help, and to attempt to do so will only cause him more pain. It also is said "it's time to forget the road we never traveled along," which implies this is a relationship that always skirted the edge of seriousness, of commitment, and I think that is a big part of why it is hard for him to move on.
He's saying he's going to try to move along, because in the end, he'll have a healthier life that way. He loves her, and always will ... but sometimes you just have to admit defeat.
I agree that the person the narrator is singing about will never be forgotten by him(as seen in the line "this love never fades,"), but the heart of the issue regarding "forgetting" in time is that he will "rescue" himself by not devoting his heart to trying to save their relationship. He can't save it without her help, and to attempt to do so will only cause him more pain. It also is said "it's time to forget the road we never traveled along," which implies this is a relationship that always skirted the edge of seriousness, of commitment, and I think that is a big part of why it is hard for him to move on.
He's saying he's going to try to move along, because in the end, he'll have a healthier life that way. He loves her, and always will ... but sometimes you just have to admit defeat.