Before going to college, people were limited by their studies and had less free time. Moreover, the school also has various school rules, and the class teacher will also take care of his students.
However, after I went to college, I began to live in a dormitory, and my space became empty and boring. Without heavy study pressure, I began to look for my other half. With the other half, I naturally developed. The point here is that not everyone can control their desires.