Cumming in Ex SIL's Shampoo & Face Wash

One day while jacking off in the shower to the thought of both my ex and her sister also being nude in that same space, I was struck with an odd yet brilliant idea. I REALLY wanted to have sex with my ex's family, especially her sister, and always tried to see her sister nude but failed. Well I also really wanted to cream her sister's face, but knew I wasnt going to get the chance to live out any of these fantasies. So on this day I was really horny and somehow came up with the idea to jack off and cum into her sister's face wash. Then I would shake it up really well so she wouldn't know. What was even better was that she was almost running out so the more she used it, and the more times I filled it with my cum, the more of my cum was making up the mixture and less of it was actual face wash towards the end. It got to a point that it was mostly cum in the face wash bottle..**** think she either wised up or just got grossed out by the texture because she eventually stopped using that face wash I noticed. I continued this act for about 9 months while we shared a shower with never a complaint spoken. I even did the same to her shampoo so each time I would hear her shower come on, I knew she would be rubbing my cum all over her face and into her hair. One of the sexiest experiences I hope to repeat in my current life given the right circumstances.