What I want is to be needed. What I need is to be indispensable to somebody. Who I need is somebody that will eat up all my free time, my ego, my attention. Somebody addicted to me. A mutual addiction.

This quote is about wanting to have a strong relationship with someone else. The speaker desires to be essential or valuable to someone else so that their time, attention, and neediness is reciprocated. They want their partner to be addicted to them in the same way that they are addicted to their partner. In other words, they want a relationship where both partners are mutually dependent on one another, without feeling like they are more invested than the other person.