Who has the upper hand when his girlfriend is a man?

This question involves different cultural backgrounds and values, so there is no standard answer. In some cultures, the decline of men may be considered as the stronger side, because they usually have more power and status in the family, workplace and society. In other cultures, China's girlfriends may be considered as the strong side, because they usually have more wealth, power and social status.

In addition, who has the upper hand depends on the specific situation and relationship. If two people have obvious advantages or disadvantages in one respect, it may be obvious who has the upper hand in this respect. But if two people are quite balanced in all aspects, it is not so easy to determine who has the upper hand.

In short, who has the upper hand is a relative concept, depending on different cultures, different situations and different relationships.