A true friend is someone who always stands by you.
A true friend may not help you solve the problems right away, but he can support you in his way.
A true friend doesn't require you to invest a lot of time and energy, it's natural and comfortable to be with each other.
A true friend has the same wavelength with you, it's so easy for you two to understand each other.
It is not inocrect to use 'he' as the generic pronoun, just socially unfashionable in some circles.