drive a wedge between A and B

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: between, drive, wedge
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

drive a wedge between A and B

make two people become less friendly or loving towards each other: The disagreements over money finally drove a wedge between them, and they ended up getting divorced.
A wedge is a piece of wood, metal, etc. with one thick end and one thin pointed end that you use to keep two things apart or to split wood or rock.
See also: and, between, drive, wedge
Farlex Partner Idioms Dictionary © Farlex 2017
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