I hadn't seen this topic before and read the first few pages before realising that it was dated a long time ago. What an interesting story you tell Una and I'm so pleased to hear the things that have changed in positive ways for you.
In an early post you said a couple of things, one was that you hoped someone would read and recognise what you had written about, and the other was about projective identification which I definitely understand but have also had the experience of being the subject of other people's projective identifcation. Not that i assume all the others in those experiences were DID but I do think 'normal' life means people are in denial of big things about themself and I seem to hoover them up.
Anyway, back to following your invitation to resonant experience, I definitely have had troubling 'fallings in love' with people I don't actually know for most of my life. A lot of them would be pulled inside me and become part of my fantasy world with which I sustained myself emotionally. However, I had a jolt very like how you described in your recent post. I had been in therapy for a year or so when my therapist recommended me for acupuncture with someone who was also a psychotherapist in the same discipline. I fell hopelessly in love with him and in the process of getting to know him a bit and then doing further therapy it became apparent that I had someone I came to call 'the girl in the dark room' who seems to share some of the sensory deprivation you describe. Meeting him was like meeting an external person who matched my inner fantasy nourishment figure/lover in the outisde world for the first time. It was truly like an awakening and from that moment on my 'fantasy world' was pretty much broken. I could never enter it in the same way again. And that was when the _real_ therapy started.
Having opened that door on love, opened my heart or whatever, I was able to say goodbye to him (because he insisted and not for want of me begging for him to stay in my life) and my attachment eventually switched to my therapist that I still see now, upteen years onwards.
I'll leave the projective identification topic aside for now. Somehow revisiting those events (of 1998) to write about them has left me rather tired. And sad, because the man is dead now and somehow that still hurts badly.