I'm trying to figure out who has a fantasy about tat-boy... your W... or you...
What if there was a magic eraser that completely wiped tat-boy from your mind? How would you live your life on your own and in respect to your W?
If it comes down to it, either block everything tat-boy on FB. Or... get off FB! I did that and I am not at any loss for it. I still go from time to time, but I am not active in any way on FB now.
You can not erase tat-boy but you CAN live your life where tat-boy is of zero consequence in how you live your life or interact with your W.
I suspect that your life will be much better for it AND... it could... help save your M...