To late adolescents, dating is an initial step to marriage. Those who date will experience explorations and commitments in their relationships. These are the criteria of an identity status, especially for dating. Basically, the beginning of adulthood is an identity crisis stage, including dating identity. Sexual harassment or abuse is undesirable in dating relationships. Therefore, families, especially parents, take very important roles in guiding their children to develop their dating identity status in the best way. The purpose of this study is to explore and gain information regarding the dating identity of late adolescents by using task intervention model according to the microsystem layer. The analysis result shows that 1) late adolescents desire interventions according to the microsystem layer of families, in this case, parents as the bridge to tighten dating relationships, 2) late adolescents experience significant increases of dating identity status after doing interventions, 3) late adolescents have clearer commitments after doing interventions.