Partner leading two lives is she in fantasy world

I have been with my partner over 12 years recently she has met a old bf who she met over 40 years ago She has fallen in love with him again and tells me she want to live together with him We are still living together in the home and also sharing the same bed She has started to see him weekends going Friday returning Monday But returning home and carry on the usual family chores She tells me she loves me but this guy is her long list love and they love each other But she cannot move in with him yet because he is getting divorced But she has started to leave this double life Why is she living this fantasy life now it really annoys me and upsets me

Ian, might I ask why this is the third time you've originated a thread about this issue, despite having had feedback already, and also why you didn't simply reactivate one of the other two?

Ian, don't be shy about this. If all the previous replies just didn't do it for you and that's why, please feel free to just say so.

IAN21, you talk about your partner, what do you want? I hear pain but not what your boundaries are, or what you want for you? Distractions make us forget who we are and what we really want.