Yeah, if it's just make-up sex then it's nothing more than a prologue to a big emotional hangover or a potential rebound with the WAS.
There's a lot to be sorted in a complicated sitch like this and ML is just one part of it. I think our boy SP understands that perfectly.
"My actions are my only true belongings. I cannot escape the consequences of my actions. My actions are the ground upon which I stand." Thich Nhat Hanh