As I took my cock out I kept it rested against her back as I could feel it growing against her. I wasn't sure that she felt it however once she began moving her back further back into me I knew she knew what she was doing.
We lay there for a while watching TV as I began to get some filthy thoughts in my head about my sister. I asked her 'are you okay sis' and she replied 'i am with you here'.
We carried on watching the movie for a while and then she turned around and said to me 'I don't want you to sleep in the spare room, I want you to stay with me' to which I replied 'do you think thats a good idea'. She looked at me and said 'I need you tonight' and turned around to carry on watching the TV.
She then began complaining about her back and said 'I really need a nice back rub, can you rub my back while we watch the movie?' I gently placed my hand on her back and began rubbing it slowly. She straight away grabbed hold of it and moved it to under her top she had on and said 'there, thats better'. So I carried on under her top gently rubbing my hand up and down her whilst my cock was getting harder and harder. I moved up her back until I reached her bra straps, I undone them with my hand and carried on up towards her neck.
She began quietly moaning as I moved up and down her back, she carried on until it seemed like she was having an orgasm. I asked her 'does it feel good' and she just laughed and smiled. She turned around to me and said 'Will you look after me tonight' and looked into my eyes with her back towards me. I froze and just stared at her until I moved into her and kissed her on her forehead as my hands carried on rubbing her back.