It's not okay to violate somebodies privacy.
Simon has a crush on Jane and asks John if he can give Jane's phone number to him.
John wants to react to Simon's request.
John suggests Simon to invite Jane out for better communication and Simon acts accordingly.
John gives Jane's phone number to Simon without Jane's agreement.
Jane feels Simon's sincerity and agrees to date with him.
Jane feels offended and blamed John for his inconsideration.