  In quantum gravity, it is expected that the Big Bang singularity is resolved
and the universe undergoes a bounce. We find that for generic initial data,
matter-gravity entanglement entropy rises rapidly during the bounce, declines,
and then approaches a steady-state value following the bounce. These
observations suggest that matter-gravity entanglement is a feature of the
macroscopic universe and that there is no Second Law of entanglement entropy.
