My thoughts
It was touching and nice to play. At first I did not want to bring any sadness to the girl, but when she began to flicker I suddenly realized everything.
I think that she represent anti-depressants, I thought this when he said "I'm afraid to live with her and without her."
Many people consider anti-depressants a burden or a crutch on life, that they can only get by so long as they have those pills. Which is terrible in itself, to only live with something you resent in order to bring yourself happiness.