I thought about "cake eating" early in my situation, but I banned it from my thoughts. I think it incorporates a lot of mind reading and assumptions about the other person.
I think when the phrase shows up it is another way of saying "I feel like I am being taken advantage of and it is hurting me. My S.O. needs to be punished for what I just allowed to happen." This is not your responsibility.
My opinion is that if feel your S.O. is cake eating it is your fault. Set a boundary that protects you from these feelings. Remember you are the only one that you can control, do something about it.
M:34 XW:34 Together: 10y Living: 9y Married: 7y Son:6 Son:4 Separated: 12/28/13 Piecing: 5/2/14 Separated 2nd: 10/16/14 W filed, but pulled it: 11/5/14 papers served: 1/27/15 D final: 3/6/15