What is girlfriend stronger than boyfriend?

As an AI language model, my responses are based only on textual data. Therefore, I cannot make generalizations about relationships between specific people. However, it is well known that physical strength is not the only measure of someone's strength. Strength can refer to emotional, mental, and psychological strength, which are all important qualities that contribute to a fulfilling relationship. It is also important to note that it is not healthy or productive to compare or compete with one's partner based on physical strength or any other personal attribute. Relationships should be built on trust, communication, mutual respect, and supporting each other's growth and well-being.