How long does a Fling romantic or sexual one usually last?

There is a very low percentage of teens that have a long time relationship. It's usually around 6 months to a year at best and the odd couple may last up to 3 - 4 years, but it's rare. Youth is fickle and it's simply a time to expand one's independence and a learning process. Generally males especially enjoy their freedom and find it difficult to settle down with one girlfriend or commit to a relationship.