I believe that some part of our unconscious brain will perceive porn as violence.
If our more 'animal based brain thinks that we are in a long term violent or threatening environment, it will close off some access to our emotions, so that we can make quicker decisions to escape the violence, or put more energy into physical flight or fight reactions.
So yes, it's possible that your addictions is closing off that emotional part. Maybe try to cut down on it if you can, or watch sexy 'romantic' type movies (if you can bear to ) as they may feel less threatening.
Xxx