Domestic divo Nate Berkus is so smitten with Rachel Zoe’s former assistant, Jeremiah Brent, that we’re told he’s left his NYC apartment and picked out a place in the Hollywood Hills where the pair are living together. “Nate came to LA, bought a luxury Mercedes and saw a Hollywood Hills home and nabbed it all in the same day,” says an insider close to the situation. “He’s been telling people now that he isn’t tied down with the show and his Target line has proven successful, he really can live anywhere.” The source continues, “Nate is inseparable from Jeremiah.” Page Six first broke the news the pair were a couple earlier this month.