time consuming
In addition to eating, shopping and watching movies every week, falling in love requires staying late on the playground with the other half every night before returning to the dormitory. These hours may be nothing to a person who doesn't fall in love and plays games and watches Korean dramas in the dormitory all day, just killing time in another way.
Spend a lot
It should be universally acknowledged that falling in love costs money. Without money, there is no love at all. Go shopping when you eat or watch movies, and occasionally buy a cup of milk tea for your girlfriend, which costs 200 yuan at least once a week. However, there are many girls who want to share some expenses with you, but as a boy, it is impossible to think about AA every time you go out, so the expenses in this area are still a lot.
introverted
Some students may be introverted, not to mention that they have never been in love in college for four years, and may even rarely talk to the opposite sex. They seldom participate in school club activities, and their social circle has not expanded. They are confined to their classmates or even roommates. If so, it is even more impossible to fall in love.
Generally speaking, most people who haven't been in love for four years in college are for these three reasons. So it's not that I don't want to fall in love, it's just another reason.