You know that she is there, and that is enough to satisfy you.
There is no sense of urgency to fix any relationship issues that you are having with each other.
You make yourself believe that she isn’t going anywhere.
After all, she keeps complaining, but still sticks around, telling you that she loves you and wanting to hear you tell her that you love her back as much as she loves you.
Alas, you keep making a miscalculation in seeking out men that are similar to your ex.
When you find one, you put a significant amount of pressure on him to give you the same physiological and psychological stimuli that you got from your ex.