同床各梦（同床各夢）　

◎ 同床异梦，同床各梦 tóngchuáng-yìmèng,tóngchuáng-gèmèng

[be strange bed-fellows dreaming different dreams;hide different purposes behind the semblance of accord] 二人同眠一床,所梦之事各异。比喻相处共事中貌合而神离