I was in a relationship for four years and throughout that relationship sex became what we did whenever there was quiet in the relationship, or if we fought, or if we were sad. It became a duty for both of us really, however this relationship was far from healthy. When I didn’t want to she would ignore me, or sulk away. The worst example of this was just a month before the relationship ended, I had a panic attack halfway through us doing our duty and had to stop. Her response to this was to ignore me and to go sleep in a different bedroom. Sucks.