Yikes! That was gettin' confusing. Here's my take on this...this...ball of confusion.
Jerry Butler was first to do For Your Precious Love, which he co-wrote, in the 50s. It was the song I had in mind a few posts back. I've since found that it hit #11 on the US charts (#3 R&B). Hit? Yes. Mega hit? You tell me. Anyway, it contains the lyrics in Bob's original post.
There were a few 60s covers, one of which was done by Otis Redding in a 1965 album track that, best I can tell, was never released as a single. Overall, his version is very similar to Jerry Butler's, but he altered the lyrics here and there and, as a result, it doesn't contain the exact lyrics of Bob's original post.
Complicating matters is the fact that Marvin Gaye and Tammi Terrell did a 60s duet of a totally different song, called Your Precious Love. The word For was dropped, probably to avoid confusion and/or copyright issues with Butler's earlier song.
Tony, I agree that you're the winner for being the first to mention a title that was close enough. Edit: I be thinking on your lyrics.