When working with intimate partnerships, my main therapy of choice is called Imago Relationship Therapy,

a therapy model created by Harville Hendrix and his wife Helen LaKelly Hunt.

They are perhaps best known for writing the book "Getting the Love You Want" which has recently been updated and improved in the form of a 20th anniversary edition. For those who are readers, I highly recommend it.

You can also check out several items on youtube by typing in "What is Imago Therapy?"