  We use the post-Newtonian-Affine model to assess the validity of the
adiabatic approximation in modeling tidal effects in the phase evolution of
compact binary systems. We compute the dynamical evolution of the tidal tensor,
which we estimate at the 2 PN order, and of the quadrupole tensor, finding that
their ratio, i.e. the tidal deformability, increases in the last phases of the
inspiral. We derive the gravitational wave phase corrections due to this
phenomenon and quantify how they affect gravitational wave detectability.
