The ‘Girlfriend effect’ refers to the positive impact that a romantic partner, specifically a female partner, can have on an individual’s life. This effect can manifest in various ways, such as increased happiness, improved self-esteem, and a sense of companionship and support. The term is often used to describe the transformative power of a loving and supportive girlfriend, who can bring out the best in her significant other and enhance their overall well-being. The ‘Girlfriend effect’ is not limited to romantic relationships, as it can also refer to the positive influence of a close female friend or family member. Overall, the ‘Girlfriend effect’ highlights the importance of strong and healthy relationships in our lives and the profound impact they can have on our happiness and personal growth.