It represents how tired one can get from constantly being lied to.
''What are the lies? Which is the truth?'' means that they can no longer distinct lies from the truth because they have become so doubtful.
''What do you think of living without me?' - They are done and over that person, all trust was betrayed and the bond they had; broken.
Let's see how that individual fairs off without them in their life anymore.
OT: 4/10