My sister Gwen

My sister is 28 single and self-absorbed in her work, she lives in my house with me. Gwen hopes to be a great writer and has had several things published. But nothing major as yet, I'm Gregory 31 her only sibling. I work at the local power plant and play sports in my spare time. Our parents don't approve of Gwen wasting her time writing books and aren't supportive of her in any way. Gwen doesn't have a reliable income and only get paid for what she writes sometimes. So she lives with me doing some cooking and cleaning. I noticed last April, you can say anything to her when she is concentrating on her writing and she doesn't take any real notice of what's said. So I tried a test and one day told her she had a nice arse and great tits. She replied thanks and kept going and over an hour later. She asked me what I had said I said there is an art show and it's great I hear. I wondered if she had heard me or was oblivious as usual and a few days later I asked her while she was writing if she would wash my back in the shower and she replied okay. It took some time but she realized what I had said and her reply. She then asked me why I needed her to wash my back and I said I had strained my back and it hurt a great deal trying to reach around to do anything. Then to my great surprise, she said she would wash my back for me. So we went to the shower and I got undressed and got in and she got undressed and joined me in the shower, there wasn't room left with 2 of us in the shower and she got behind me and washed my back and I washed hers. During this showering, I got a hard-on and she noticed it straight away and asked her to stroke it for me. She did as I asked and I decided to try my luck and started to feel her up and I was soon fingering her and then I asked her to let me fuck her. She stopped stroking my cock and didn't say anything. So I pulled her closer and tried to mount her and soon inserted my cock into her and we fucked in the shower. After the shower, I wanted more and took her to my bed and fucked her again. She started to sleep with me at my request and in July she found out she was pregnant. We're expecting our daughter in February next year.