The Egyptians thought of their afterlives as more of a continuation of life on earth (albeit a better life). This being the case, the Egyptians believed in sex life after death!
Egyptian men had false penises attached to their mummies while Egyptian women had artificial nipples attached. Both would become fully functional in the afterlife, where they were free to engage in sexual intercourse, if they so desired.
There were even fertility dolls in many graves - women with wide, child-bearing hips that were often carrying children in their arms. Other fertility dolls, known as paddle dolls, don't have any legs, and their bodies end in very wide pubic area, with tiny heads and arms.
These dolls show that the Egyptians believed that fertility and sex were interlinked, though the ancient Egyptians quite clearly enjoyed sex in its own right!