I do not agree with this, 100%. I do believe in something called Trauma Bonding, or the act of emotionally attaching yourselves to your partner because of similar pain, experiences, etc.
And because both of you are looking to forget, numb, or dismiss the thought, memory, feeling... or whatever, you create place of peace within each other, and try to adapt to "happiness created" rather than happiness found. ANd then when everything crashes, it's because of a non existent reality you've created that now has to be bonded....it's just a cycle until you step out of the third demension and fix self first