[#][F] Stephen Lea Sheppard - 4/15/2018
As others have said, whether two intimacies conflict is contextual; as circumstances change, two intimacies that don’t conflict at one point might begin to conflict later. So you pretty much need to give them a Major Intimacy that doesn’t seem to conflict with the Defining Intimacy you want to erode, and then arrange circumstances such that they come into conflict. You can then attempt to use the Major Intimacy to erode the Defining.

This is pretty difficult!