Sometimes, it's difficult to prove that you love somebody because of the many constraints or hurdles in life. Limitations set by time, by status, or by a person's capabilities. It is even harder when the involved person is a child.
Children only knows black and white, they don't recognize a gray area. They only feel either love or neglect. It's difficult for them to understand certain circumstances that sometimes prevents us adults to show them our love. But as they grow into adulthood, they ease into it. Sometimes they learn to understand and take it as it is. However, there are also times when they fail to see the love and focus only on the pain of unfulfilled longing for affection.