Research indicates that individuals with the oldest child syndrome are more inclined to form close bonds with others who share their birth order. Additionally, firstborns tend to display a greater sense of responsibility, which is integral to a relationship. Furthermore, oldest children often develop nurturing qualities due to their role in caring for younger siblings. Therefore, they may exhibit caregiving behaviors and prioritize the needs of their partners. However, if the oldest child becomes overly focused on caretaking and neglects their own needs, it may also lead to potential imbalances in the relationship (10) (11).