Which one is correct to use in this context?(all pronouns refer to the same people)
Your best friend is you.
Your best friend is yourself.
Our best friends are ourselves.
Our best friends are we.
Our best friends are us.
My best fried is myself.
My best friend is me.
My best friend is I.
Her best friend is herself.
Her best friend is her.
Her best fried is she.
And what about these sentences?
My fried is she.
My best friend is her.
Her best friend is I.
Her best friend is me.
Thanks in advance