You in law school or something? Because you"ve been told you"re totally wrong a couple of times now by several people and you just lawyered the shit outta this topic. It"s fine man, it"s okay to be wrong. It"s okay to not understand the complex being that is a woman. You don"t gotta go all crazy defensive about it.
I"ve got a lot of female friends/acquaintences/etc, and none of my wife"s friends are married. Ladder theory can be used to describe every single one of their situations almost to a T. It might look like something some dudes came up with after a night of drinking (and actually, it probably was), but it"s pretty much dead on the money.
You were never on the friends ladder with any woman you fucked. Your situation was exactly the same as mine with my wife. She was around, had intentions, and was waiting for me to make the first move. Unfortunately, since guys can"t ever make the first move and come out looking good, we rarely do, and then she had to make the move for me.
You can come up with whatever defense you want about using the wrong word or whatever, but that"s just the way it is. It doesn"t matter what word you"re using to describe the relationship, the point is that it wasn"t taking place on the friends ladder, it was on the fuck ladder.