Hi, Denis, welcome to PsychCentral (PC). I use to have imaginary friends; "lived" in a boarding school in England (when I actually lived near Washington, D.C.

and even had a horse named Thomas Aquinas who was smart and would come when I called him.
I don't recommend getting close to imaginary friends, for me, it made it much harder to learn to live life in the here-and-now and get to know other people, etc.