Vintage Vietnam Love Letter On Photograph

Nothing is more romantic than a soldiers love letter! 
This is a photo from the Vietnam War. It is unclear what year, however it was likely in the 1960's or 1970's. The War lasted between 1955 and 1975.
The writing on the back is fading. It reads...
 
"To Gloria,
One of the sweetest girls I ever (met).
May we go on forever.
Always remember there will always be a place in my heart for you.
Yours Always,
Ricky"
 
This photo is in fair condition. There is visable wear, scrapes and some discoloration.
This would be a great item for something borrowed or something old. 
Small wallet sized photo
approx. 2.5in x 3.5in