(tbf, because i have to be pedantic about this, sex dreams dont always represent repressed desires or anything. They can also be a way of your brain processing complex emotions. Dreams about about processing memories primarily, and sometimes your monkey ass subconcious mind cant process the complex stuff and just goes "sex!". Thats why someone who does not at all want to fuck their family members might have an incest dream, for example. It can be very traumatic!)