I was out at the sauna Sunday night and when I got home I found my stepson asleep in the sitting room. He told me he was coming for Christmas but I was expecting him Christmas eve. We is 21 and we have kept in touch since his mother died 3 years ago. He was in the sitting room fast asleep with the fire burning. He had made himself comfortable and undone his trousers. He must have been enjoying a dream as he had a massive erection showing out of the top of his trousers. It was then that I noticed that he had been watching one of my gay videos. I couldn't resist it I knelt down beside him and and kissed the head of his cock. I never realized that he was at all interested in other men. As I reached forward to touch his cock he opened his eyes and said "hi dad, have you had a good night". I told him that I had and asked if he minded me touching his cock. He told me no and that he had wanted me to touch him for a long time. With that I pulled his trousers all the way off and took his young cock into my mouth. He held my head thrusting up fucking my mouth. I rubbed and played with his balls while all the time he thrust harder into my mouth. I could feel his cock getting harder has he shot his young seed into my mouth. When he was finished I let his cock escape from my mouth and looked him straight in the eye and asked him if he would like to **** with me. With that he stood up, took my hand and together we went to my bedroom. There is so much more to tell you so please "Watch this space" as they say.