slobber over someone 
phrasal verb with slobber verb [ I ]  disapproving uk/ˈslɒb.ər/ us/ˈslɑː.bɚ/
  informal disapproving      
 对(某人)垂涎三尺;向(某人)过分示爱
to show how much you admire and like someone, in a way that shows little control
  Ted was slobbering over the pretty new assistant in marketing. 泰德对市场营销部那个漂亮的新助理垂涎三尺。