What country song is this?

I'm trying to find the title of a country song, but I can't really
remember the lyrics...at least not the order of them. All I can
remember is what the song was talking about.

The song talks about how a woman who had promised to spend the rest of
her life with a man, up and left, and it talks about how they promised
each other forever, but she left anyway.

I'm pretty positive its a fairly recent song....does anyone know the
name of this song?? All help is appreciated!! Thanks!!