The Eighth house has always been considered a Gate of Hell. Relating to loss, greif, and death. Co-signified by Scorpio (the Sign related to expulsion) and Saturn (the Lord of Ruin). Thanks to the new system of thinking somehow Pluto is now related with the Eighth house and in an attempt to sugar coat its meanings has become known as the house of 'profound emotion'. There is nothing sexy about the Eighth house.
The Fifth house, however, is the Temple of Venus, goddess of fertility and love. As such, this house signifies all things pleasurable including luxuries, the feelings of love and romance, sex, and children as what comes from sex.
As my signiture states. The idea of enjoying sexual activity with a strengthened Eighth house would be amusing. Except for when you realize you're dealing with sex, which is a vast area that could lead to several types of violation and the feelings of loss and greif that could accompany it. In other words, it is not a good idea.
You're actually thinking of this the wrong way. The Fifth house is wherein we are conceived, and nine houses from the Fifth is the First wherein we are born.
Fifth house is sex.
As for your Liz Greene reference, LoneStar, I'm afraid astrological tradition is not behind her.