"In good relationship?"

Open Forum in English
1
  1. to be in good relationship ( with … )
  2. to be in a good relationship ( with … )
  3. to have a good relationship ( with … )

Are there any differences between the above three sentences? Alex advised me to use the first one, but I am afraid I could not understand the point.

“The Bush family was said to have been in good relationship with the Bin Laden family in Saudi Arabia.”
http://bit.ly/dFJExu

2
  1. is not normal usage
  2. refers to a boy girl relationship
  3. is the way to describe a good relationship of a general relationship
3

I meant of a general nature

4

Thank you for your explanation, Steve.

5

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