Thanks heaps to everyone who responded to my plea for this song. The good news is that a few months ago my son was boasting about a site he said he could use to get "any song" ... so I challanged him to get "Could You Ever Love Me Again", and within half an hour he was crowing to me that he had done just that. I was over the moon. What bugs me is that there was NO way I could buy it properly, on a CD, from any music store.
Even the album "Canadian Gold" is not available for purchase. I've bought "boxed sets" for "70's best hits" as well as 60's and even 50's but couldn't find what I wanted. At least now I have it, thanks to my son, and the Internet.