In 12 constellation, why does Sagittarius have prejudice against others?

As a standard Sagittarius girl, I am really prone to prejudice against others in my life. Sagittarius people are not so self-centered, but rather too upright, which sometimes leads to more brain damage.

Let me give you an example that happened to me. When I was just with my boyfriend, I would pay more attention to his behavior to judge whether this man is reliable or not. Because I really hate stingy boys, and now there are many boys who are really stingy. I'm afraid he is also a miser, so I will care more about whether he is willing to spend money for me.

Later, I found out that as long as we had dinner together at night and he paid for it, he would definitely let me buy him something during this time. This makes me very chilling. I think this man may be really stingy. So I have always taken this matter to heart and have a prejudice against him.

But when we really communicated this matter later, he said that he didn't have that idea at all. He just wanted to leave some traces of me. I want to see the things he asked me to buy for him. They are really small things that can be carried around, so I really misunderstood him.

Therefore, sometimes we Sagittarius are really stubborn. I always feel that some actions must be done by people with ulterior motives. This leads to prejudice and affects the relationship between two people.

In short, I also deeply realized this shortcoming of myself. Now I will think carefully before speaking or doing anything. If there is really something I don't understand, I will choose to communicate with each other actively, rather than secretly suspecting myself.