<p>"If not for him I couldn't have gotten through the most difficult time of my life," Grubman, who identified her new beau only as Jeff, told The Post.</p>
<p>Grubman, who backed her father's Mercedes-Benz SUV into a crowd of revelers last summer outside the Conscience Point Inn in Southampton, injuring 16 people, pleaded guilty Friday to leaving the scene of an accident and misdemeanor assault. Under the plea deal, the DWI charge against her was dropped.</p>