diary friend

A friend that that makes you feel like you could genuinely tell them ANYTHING without any judgment, someone who you have never worried about them spilling your secrets ever. Telling this friend something is like telling your diary, you can share any thought and it won’t be shared somewhere else.

Example 1:
Person A: Hey girl can I tell you something??
Person B: Of course, we’re diary friends!!

Example 2:
I wish my diary friend was here, I need to tell someone this