3 adjectives to describe doubleness

You can be, and should be, loyal to your friendship, to the union of yourself and your friend, to that ideal comradeship which is neither of you alone, and which is not the mere doubleness that consists of you and your friend taken as two detached beings who happen to find one another's presence agreeable.

Must we assert the objective doubleness of the M merely because we have to name it twice over when we name its two relations?

I recalled the queer doubleness of my memories overnight.

3 adjectives to describe  doubleness