My Old Aunt's Dog

I'm the closest living relative to Anna and when she passed away in June everything came to me Judith 46. I'm divorced and have 1 child who is out on his own starting a family in the next state. Both my parents are deceased as well as my only sibling, my father was Anna's only sibling and she never married and had no children. I work as a receptionist and had rented a small apartment before my aunt passed away. She preferred to live alone in her cottage on the edge of town. Her only company was Duncan a large Labrador cross who was always with her. He was the latest in a series of dogs and I hadn't thought anything about it before her death. As I inherited everything, I got the cottage and some money, with the cottage came Duncan. He was quite lonely at first, when I moved in. Missing Anna and I left him come to terms with her passing himself. Over the next month he improved and had accepted me as his new master but would still sit and look at Anna's old armchair. I'm not into dating and prefer my own space a bit like Anna had been. One evening I had finished my shower and brushing my teeth, when I knocked my cellphone onto the floor, it fell between the cabinet and toilet bowl. I got down on my knees and was reaching for it when Duncan came up behind me. I was still naked after my shower; he mounted me and found my pussy straight away. He rode me as hard as he could, I was shocked at first and then told him to get off me. But he ignored me and just kept fucking me. I was a bit afraid at first, but I also started to enjoy him fucking me. I've hadn't had any sex since before my divorce 4 years before, so I stopped trying to get him off me and let him finish. After he did, he licked my pussy, I came instantly. He then returned to the lounge room, I showered again. Duncan was closer to me after he had fucked me, I realized he had been fucking Anna before me. Anyway, I dismissed it as a onetime thing. But a day or so later I found myself looking at Duncan and was feeling horny. So, I decide to see if he would fuck me again and I stripped off and got down on my knees. Duncan didn't need to be told I wanted fucking and was soon riding again, after he finished, he laid down nearby licking his cock. I was laying on my back and then back onto my knees to get up, Duncan came straight over and mounted me again and I let him fuck me. This has become a regular thing between Duncan and me and I'm getting fucked anytime I want. I rarely wear panties now as he likes to lick my pussy when I'm sitting, I really enjoy him doing that. So, I'm his bitch now I suppose.