I suppose it does happen, but I don't think I could ever understand someone who, having gone through the sheer h*ll of being the victim of infidelity and the resulting destruction of their M and family at the hands of an OP, then commits the same crime later against another family, to become an OP themselves.
Must take a pretty frakked-up mindset to pull that one off and still be able to live with oneself.
If I ever find myself in the position of being the OM, then please shoot me dead!
As for being a step-parent, yes, it's difficult enough as it is. I happen to like most kids quite alot. But unless I am in a situation where I adopt them outright, I can at most love them like my own, but not as my own. KWIM?