Answer:
You heard me before and then again. Afterward I die until you call me again.
If you lose one of me, you are upset, bewildered, and perplexed. If you lose two of me, you are blissfully unaware. What am I?
Draw fire or fill me; I'm still empty.
If there is a bee in my hand, what is in my eye?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
Give it food and it will live, give it water and it will die.