Because they are narcissists?
..or because they are similar to aries which is a known aggressive sign too
It's that time of the month .
some are annoying but then you have some who are mad cool. Most Gemini’s for the most part have big personalities so someone more resevered and sensitive could be affected.
A person's zodiac sign is actually just their SUN sign. Indicates how they relate to themselves.
Aggressiveness is not about how we relate to ourselves, so their Sun sign doesn't give the information you want.
MARS is the planet of how we take action, and whether we are aggressive or not .. and if so, in what manner.
No matter what the person's Sun sign is, their Mars could be in ANY of the 12 zodiac signs.
And if their Mars makes harmonious "angular aspects" with any of the other 9 "planets" in their birthchart, they tend to easily take action in constructive and effective ways.
But if their Mars makes discordant "angular aspects" with other planets, they tend to be aggressive and act in ways that are not constructive.
The problem here is that you have been fooled by commercial writers who write about Sun signs to make money.
This is not what real astrology is about.
You have to do up the person's birth chart (lots of websites do this for free) using their full birthdate, the exact time of birth, and the location of their birthplace.
And then you have to evaluate ALL of the 40-50 factors in that birthchart. And for specific questions (which is what your question is), you have to now which planets are associated with that type of behavior and study THAT planet .. its sign, house, and most-importantly what aspects it makes to the rest of the chart/personality.
lol , gemini women are not aggressive at all, have you been drinking again???
not all are like that, you just ran into one that was
Not all of them.
astrology is fake , so your question is irrelevant
Because astrology is fake.