Cheating and infidelity do not have to involve another person. What you are describing fits perfectly with NO OTHER PERSON.
Can i ask for clarification on that please Cadet?
PA = physical affair EA = emotional affair (W may be emotionally attached to someone who is or is not emotionally attached to her) IA = imaginary affair (W imagines a knight in shining armor will ride in to sweep her off her feet)
In some ways IA's are the worst, because they are perfect. EA's and especially PA's eventually unravel once the affair partner is no longer on their best behavior. And let's face it, any guy that is willing to engage in an affair with a married woman is of dubious character to begin with, so most affairs are doomed from the word "go". But an IA? It's whatever she can imagine. Hard to compete with perfection!