The love between uncle and nephew is a kind of blood relationship, which may be based on the close ties of blood and influenced by family culture, traditions and values.

Here are some factors that can explain the intimate relationship between uncle and nephew:

1. Family role: In many families, my uncle usually plays a caring role in the family. He may be the elder of the family, with more life experience and wisdom, and can provide guidance and help for my nephew. This role may also make my uncle and my nephew closer, and it is easier to establish intimate relations.

2. Blood relationship: There is blood relationship between uncle and nephew, which may make the two sides more intimate and trust. For nephews, uncles may be their first blood relationship, so they may have more sense of identity and closeness.

3. The influence of family culture: In some cultures, family values and traditional concepts will affect the relationship between family members. For example, in some cultures, an uncle may be regarded as a protector or supporter of the family, and he may provide more attention and support for his nephew's growth and life.

In a word, the intimate relationship between uncle and nephew may be the result of many factors, including family role, blood relationship, family culture and so on.