Early bloomers include Multiple Choice 15 percent of 17 - to 19-year-olds who report that they have not engaged in any romantic relationships that lasted more than four months. 10 percent of 17- to 19-year-olds who say that they have had no experience with romantic relationships. 15 to 20 percent of 11 - to 13 -year-olds who say that they currently are in a romantic relationship. 15 to 20 percent of 14 - to 16 -year-olds who say that they currently are in a romantic relationship.