A Scorpio’s obsessive nature can be seen from the natural order of the zodiac.
Their core identity is something that they can struggle to feel comfortable with. Feeling “safe” and secure is something they have to work on over time.
Why?
Their natural first house (ascendant) is ruled by Pluto and Mars. Mars also rules their 6th house (Aries).
They find security through knowledge, knowing more secrets and using those to gain leverage.
This is at the root of their obsessive nature.
8th House Gemini: Morbid Curiosity
The Scorpio’s natural 8th house cusp/sign is Gemini, ruled by Mercury.
This is why their speech and mind can go to the extremes – delving deep into the mysterious and unknown side of life, far past the surface level.
Mercury governs speech – how we communicate our needs to others.
When they do speak, it’s serious – heavy, weighty stuff.
Their speech can also undergo extreme changes. Water signs are all said to be silent (we can’t hear under water). Scorpio is very silent and still, typically.
If you happen to be a loud, sociable, and outgoing Scorpio, then you likely have other planets that contribute to that in your birth chart.
A Scorpio’s Obsession is their Strength
Mercury also rules their natural 11th house of gains, achievements, and wish fulfillment.
The Scorpio’s natural obsessiveness works in their favor to help them rise in life.
They’re exceptional at doing in-depth research and strategizing.
How Obsession Can Work Against the Scorpio
Obsession is a double-edged sword. Mercury governs the unpredictable, transformative 8th house and the higher-minded 11th house.
But a Scorpio’s ruling planet, Mars, isn’t naturally friendly to Mercury.
Odd, right?
This means that their innate nature (e.g., who a Scorpio is on a fundamental level), is incompatible to Mercury.
However, Mercury is NOT antagonistic to Mars. This is a one-sided planetary hate coming from Mars alone!
A Scorpio’s intimate relationships, friends, social circles, and the capacity to emotionally connect with others is often open on the other party’s end.
It’s closed on their end.
Scorpios need to learn how to use their personal will, passion, and obsessive energy productively.

