Does anyone know this love poem?

Several years ago before my grandmother died (at 96 years old), one Christmas she suddenly recited this poem and I can’t remember it really…. i believe it started something like:

“I wrote a letter to my lover the other day….”

I think there was something in the poem at the end about her ripping the letter up and the lover never actually receiving the letter…but I’m not sure…. IT was fairly long…i would say about 6–8 stanzas (we were all dumb-founded when she came out with it from beginning to end (from memory).

I know this isn’t much information and its a long shot, but if anyone knows or knows of any really good websites that would help me find this poem i’d be very grateful.

I’m just hoping it’s not a poem she wrote herself!

Anyway I’ve looked on many websites trying to find this poem for my mother