It sounds like you're doing an extreme form of mirroring. I used to do that more when I was younger. "Empty" of my own self (which was somewhere underneath) while reading and reflecting people's expectations and wishes. These days I have to remain mindful of my tendency to mirror/chameleon, especially where I differ from the other person. For me, this behavior ended up being associated with BPD, but I'm not sure what it might mean for you.