We imagine a separate object that we imagine to be apart from our experience and simultaneously, we imagine ourself to be a separate subject that lacks the imagined object.
Desire is a dualistic imagining that separates us, but not really. Separation is imagination.
This internal mechanism is unhappy as it contracts and stirs the body mind in a subject-object dichotomy.
Upon closer scrutiny, we realize our experience is wholesome, undivided, lacking nothing.
There are no things within or outside experience.
Objects only arise as mentations and refer to the mental subject that we believe we are which is pure fiction.