Sagittarius, for example, is often forgotten because of playing too late or sleeping too late, and stands up because of oversleeping. So remind them the day before to make sure that the agreed things need to be changed? If you don't change the time, remember to remind them many times to make sure they don't forget, and there will be no sudden party at night and they can't get up the next day. Don't exaggerate, many Sagittarius are not in such a hurry and will really stand up.
Sometimes Taurus doesn't want to go, so he will find some excuses to push it off. The reason why they stand up is often inseparable from their emotions. Sometimes Taurus suddenly wants to be quiet and doesn't want to have "others" around him. At this time, he will find an excuse to break his promise inexplicably. But they rarely "stand up" directly, but will tell you in advance so that you can be prepared.
Pisces sometimes stand up, because Pisces is "brainless" and they really forget to date. However, most Pisces can still keep their appointments. But if there is something important to talk about, Pisces will often struggle with the pressure of dating and finally drag it into a "dating breakdown." In fact, all the twelve constellations have broken their promises. As for the constellation that is the easiest to break faith, it's really hard to say. But relatively speaking, these three constellations are more likely to break their promises.