You really don't need studies to understand this situation
***
Married guy decides to have a short term fling on the side with girl
Girl takes this short term fling as an actual relationship (and yes, we girls do take relationships seriously)
Married guy decides I'm tired of you and want someone new
Girl thinks "hell no", you got some milk from me so I need something from you
Married guy dug his own hole....
Kinda funny to me actually... its the way it is...