Another fear closely related to the fear of being left out is the fear of playing "second fiddle." Perhaps your partner is starting a new relationship, and maybe you aren't really being left behind—but you aren't the number one focus anymore, either. This, too, isn't just a problem in polyamory. You can become second fiddle to a new child (or grandchild), to a new job, to a new hobby…hell, Franklin has seen someone whose partner became second fiddle to a pet. (It was a very cute cat, mind, but still…)