One person can severely torment another with comments or looks or in writing. Most young people do not harass others. Most boys and men do not harass girls and women. Harassment of any kind should never be expected or accepted. Those being harassed complain just to cause trouble.
Most victims don t complain.
The vast majority of those who do just want the behavior to stop. If harassment occurs, you have the right to take action to stop it. You have the right to be protected against retaliation. Your school has the legal obligation to have a policy to prevent harassment and to deal with harassment if it happens. This policy should be written in your student handbook and posted in prominent places.