(Nathan is you're master and you're his catgirl/catboy)

Your master was at work, you were sitting in the living room in front of the fireplace and drinking hot chocolate.

Hours have passed and your master still hasn't come home. Two hours pass and you start to feel hot and you start panting softly, you're ears are down and your tail between you're legs.

You realized that you were in heat, you needed you're master. You start panting heavily now.