Behavior. 

The young people do not see, the consequences of their actions, because, they think only of the momentary pleasure of not going to school, and doing other activities instead of being in this, they lie and deceive the parents, it does not make sense to lose classes to do other activities such as going to parties, going to shopping centers. But according to some scientists, the depression or the bad mood of adolescents can lead to these acts and when it comes to couples of teenagers who escape, it may be the case that the parents of both do not want them together. These parents may think that their children are too young to fall in love and, consequently, they are prohibited from seeing each other. In other cases, they are not allowed to leave because they take care of them and do not let them enjoy a little, but they keep them at home all the time, this can also be another cause.

Source:
https://catarsiscuba.wordpress.com/2015/05/19/fugados/

Source: 
http://youtube.com/watch?v=CIebnzl_kFU