Help!!

I think this song is either an 80s or 90s song. I only have part of lyrics of the song. I would like to find this song & artist. Hope there's someone out there who is able to help me. I cannot find it anywhere on the net either.
Here are the lyrics:

Once upon a time I heard a robin sing,
Right outside my window would he sing to me,
Little did he know that I was crying with the dawn,
Hurting at the feeling that my life had just gone wrong.
Why she had to leave me could you tell me please,
All I tried to give her was the best of me,
But she chose another guy,
Until this day I wonder why.

I did not find a good match for your lyrics.
The closest I got was "Young As Spring" by Wynn Stewart