By age 16, relationships last an average of two years, writes Fogarty. Most long-term relationships do not occur early, and during the teen years, you are likely to see group dating, according to Melanie Greenberg, Ph. D., in the article titled The Neuroscience of Relationship Breakups, in Psychology Today.

Why do most teenage relationships end?

Teen relationships may end because both people may realize they arent interested in the same things, that theyre heading out to college, or that they arent willing to stick it out when things get tough. Breakups are difficult, and passionate teens often have a harder time dealing with them than adults do.

What are the chances of teenage relationships lasting?

High school sweethearts that get married while still teenagers only have a 54% chance of having their marriage last 10 years. High school sweethearts that wait until at least the age of 25 to get married have a 10 year success rate of 78%.