When I was 7 I was heavily into a book series called 'A Series of Unfortunate Events'. well somehow I ended up being there and in the fifth book "The Austere Academy" and I became Sunny, Violet and Klaus's friend. I was their by their sides helping them with everything! I spent an entire year with them watching the seasons change, talking, helping, reading along side them. I was happy I wasn't afraid that I was alone, I was excited and happy. I was there but when I woke up I had started to cry... I never got to say goodbye...
I was seven when this happened, I was never able to do that again.
(this was not the very first experience I've had but this is the one I remember the most clearest.)