But the important thing here was what he evoked in her- that she was going to save him
Yes, just like you. In fact, you could have a second career preventing rescuers from coming to his aid. Before you know it, your entire life will revolve around him as a satellite guard. You could take "legal actions" against people who may just be doing their job- and whom you have been lead to believe are sexualizing him in a professional capacity. This pretty much adds another person to your list of mental illness... .and takes a load off of him. (How convenient for him.)
After all, you don't know what's really going on - and that's done on purpose because it's a nifty way for him to deceive you, and plant the seed in your head that your character (and hers) are both flawed- You, on the other hand, are trying harder and harder to be heard- and I think really, that this is what your complaint is all about. The authority behind the disorder on both ends, (his end and the therapist's end) is out of your hands. You have no idea what goes on in their sessions and that's upset you.
He's taken the perception of your rescuing and turned it into something unclean- something persecutorial. Something YOU caused. And in doing so, you are now the victim. But this is when you should gladly step aside and not allow any more interaction that can and will be used against you. You do not need to make yourself a greater victim of TWO people.
Triangulation
(read definition) is only a way to keep you trapped. There is no deal here to be made. There can only be an understanding that you will never get your voice, your reputation, your dignity, when it's held by a mentally ill person who belittles and uses it for his own gratification. There is only one out. You must leave him (and her) behind. She may be a victim as well, but that's not your concern. Neither is he.
It's now your turn to be somebody outside of the illness. The only problem you need to be saved from is your attachment to the outcome.