drive a wedge between

drive a wedge between (someone or something)

To cause discord between two people or things. I used to be close friends with Tiffany, but once she started dating my ex-boyfriend, it really drove a wedge between us.
See also: drive, wedge

drive a wedge between

someone and someone else Fig. to cause people to oppose one another or turn against one another. The argument drove a wedge between Mike and his father.
See also: drive, wedge
References in classic literature ?
Those who were called skillful leaders of old knew how to drive a wedge between the enemy's front and rear; to prevent co-operation between his large and small divisions; to hinder the good troops from rescuing the bad, the officers from rallying their men.