Answer:
The more you look at me The less you see.
I am a way to say goodbye to your sweetheart
I am a busy worker who is a water mammal.
Everyone in the world needs me. They generously give me but never take me. What am I?
I am a fruit. If you take away the first letter of my name I become a crime. What am I?
The answer I give is yes, but what I mean is no. What was the question?