Scorpio and Cancer. Used to be Scorpio and Virgo. Before that it was Scorpio and Scorpio. And you scar somehow the other with your silence, because this distance/silence/stress hurts each other, even though we are perfectly compatible.
The Scorpio's planet is Pluto. Pluto is the Roman god of The Underworld. Scorpios are often associated with occult, and other gothic things such as skulls, which Hades/Pluto is associated with as well.