When I'm lost, I hurt the most, as well as when not had at all. I’m often hard to express and easy to ignore. You can give me to just one person, or to many. What am I?
A truck driver and a doctor fell in love with the same woman. The truck driver had to go on a weekend trip. Before leaving, he gave the woman 2 apples. Why?
It could be delivered by mail, email, by hand, or even by pigeon.
It is sometimes short, sometimes lengthy, and with deep, profound, or simple feelings.
What is it?