My Sister Denise

I'm John 25 single, mechanic and work a large national trucking company. Last July I was offered a new job interstate, the company mechanic there was retiring and they wanted some already employed by the company to take his place. I accepted as it meant a pay raise and I would be closer to my family. My parents live in the next town and my sister Denise 28 married 1 child Daniel 3 lived in the town I was going to. I left at the end of July and started work at the new depot in August. I had already seen my parents and Denise since arriving there. Carl 41 Denise's husband worked away a lot and was rarely home and I would go and see Denise most weeks after my arrival. She didn't get out much even when Carl was home. So I started taking her and Daniel out on weekends. Sometimes a movie or just out for lunch and I soon become aware not everything was right in her marriage. Carl was restless and wanted out of the marriage, so it wasn't much of a surprise when he asked Denise for a divorce just before Christmas. Carl made an offer of her getting the house which was fully paid for a large sum of cash and setting up of a trust fund for Daniel and then a clean break between them. Denise accepted the offer and I knew she was really upset by everything. Denise told me later that Carl was like a caged animal in the marriage and had only married her because she got pregnant and had rarely had sex with since the wedding. After Christmas with the divorce still going thru the process towards being final. I was at Denise's home having a few drinks with her and trying to stay clear of talking about the divorce or Carl. Then Denise just she was really horny and wanted someone anyone to fuck her. I was shocked at bit and made offer of fucking her myself fully expecting her to refuse me. But at first she was quiet and then standing up saying why not at least I know you won't run out on me. Grabbing my hand and telling to join her in her bed. I wasn't sure she was really wanting sex with me or trying to get me to back down. On entering her bedroom she undressed completely and I followed her lead. We fucked that afternoon and again that night and it soon became a regular thing between us and after a couple of weeks I moved in with her and into her bed full time. Denise is on the pill and I don't any precautions, but there is always the chance of something going wrong like the with Carl and the birth of Daniel. So Denise, Daniel and me are living together like a family.