It means your pretty normal and your subconcious, probably, is wondering what if you went down a different path. I have been happily married for seven years, still dream of a few "key" ex's. Your dream world is where you can do whatever you want. Just don't text them when you wake up to revisit your old relationships.
You know what scares me? dreaming of them (all 4 lol) and feeling like I am saying goodbye to them because I am dying and want to say thanks for teaching me to love. I have been sick lately and I have also been dreaming of strange things. OMG! Could it mean that I am dying?