Provide an example of a metaphor that relates to "knowing someone".
"Getting to know someone is like peeling an onion, uncovering deeper and more complex layers beneath the surface."
Complete the following task based on the instruction and optional input provided.### Instruction:
Provide an example of a metaphor that relates to "knowing someone".

### Output:
"Getting to know someone is like peeling an onion, uncovering deeper and more complex layers beneath the surface."