I need help finding a song that is stuck in my head but I cant remember the exact lyrics.Sounds like a sad downtempo song from the 70s, male vocals. I thought it might have been a song I heard from the movie Zodiac but I looked through all the songs used in the movie and couldn't find a song that sounded the same.

I think the lyrics where about time and love being cruel or something like that. It might be a song I remember hearing in a movie that featured the Vietnam war.