Friends

What are some subjects that you will never discuss with a friend?
I do not like to talk about own thing too much. Especially, I do not want to talk about my serious problem. However, I want to talk to only a few best friend about own all things.

Do you have different friends for different parts of you life? If so, how are they different to you? Do you talk about different things? Go to different places? Give me some examples.
Yes, I do. Different friend for different part of my life have a baby, and she is housewife. Our life style are different, but we are best friends. When we meet, we always stay her house. And I often play with her baby.