The position and aspects of Pluto have to do with the deep underlying motives and fears that propel you toward inner transformation and force you to come to terms with the basic issues of life and death.
On a more mundane level, Pluto governs the power motive in sexuality, the impetus for one partner, perhaps because of personal insecurity, to dominate the other.
You share the sign that Pluto is in with an entire generation, for it is in the same sign for at least twenty years. The sign reflects the sexual issues that each generation works to transform in order to make sexuality relevant on an individual basis.
The house position of Pluto indicates the areas in which you seek power and have a positive reforming effect on others, including your lover.