I relate it to a person who can only talk about their job, or their kid, or their car. There was one old guy I spent a summer with who could only talk about his experiences in the war. And I don't mean blood and glory - more like boring shit because he was stuck in a training facility as a non-com telling guys to dig trenches.
Maybe train your mind by doing mental exercises. Like giving yourself a slap in the head with the Carp of Irresponsible References everytime you think of your ex. Not just in conversation, but even when by yourself. *Smack!!*
Then give yourself a shake and change the topic to something more interesting to strangers. Like the arts, or how to plan for a new world of debt management and creative re-assessment. Or something.
Anything but *Smack!!*
