There was an opera, "Mary's Wedding" written in Canada that commemorates these women. It was a Canadian opera commissioned by Andrew Paul MacDonald and Stephen Massicotte and first performed at the Pacific Opera company in Victoria, British Columbia on November of 2011 and has
gone on to be well accepted across Canada.
It wasn't until after she died that someone mentioned that my Aunt Flo had had a boyfriend who went off to war. I don't know if he was killed or like other soldiers came back too damaged. The war destroyed a lot of potential relationships and deferred others. We know a bit about the widows, but not so much about the girlfriends. Many women never even met potential suitors lost in war.
A lot of good men lost their lives in wars and we rightly celebrate their sacrifices that were critical for us to enjoy our life. They left a lot of women behind who adjusted in a variety of ways, some happy and many not so.
If you would like to learn more about "Mary's Wedding" check out http://www.pov.bc.ca/maryswedding.html which includes information a short video clip.