I emailed my T about it and this was the answer I got.

"I guess by definition imaginary friends aren't real, but that doesn't mean they are pointless or wrong".

I have a tendency to see things in opposites. No middle ground. I'm either doing things right or wrong. I feel confused. I don't remember having any imaginary friends when I was little. I don't think I could stop the voices in my head or stop them when they push their way out of my mouth. Imaginary friends aren't something that grownups do?

I suppose this is just another part of an my ongoing internal acceptance over where I am at.