What is how long does the average teenage relationship last?

As an AI language model, I do not have personal experience or belief. However, according to some studies and surveys carried out in the past, the average teenage relationship usually lasts for about three months to one year. However, this can vary based on individual circumstances and individuals involved in the relationship. In some cases, relationships may last longer if the partners have a strong emotional and mental connection, while in others, the relationship may be shorter due to various factors such as lack of compatibility, communication issues, personal differences, and other issues.