1. Biological attraction: A-type blood males may have biological attraction to O-type blood females, as blood type plays an important role in genetics and reproductive system. Although there is no direct scientific evidence that blood type affects individual attractiveness, cultural and traditional beliefs sometimes associate blood type with personality traits, indirectly influencing people's preferences.
2. Personality complementarity hypothesis: According to some non scientific theories about the relationship between blood type and personality, A-type males may be considered to have meticulous, serious, and responsible personality traits, while O-type females are often described as outgoing, confident, and leadership. This difference may lead to A-type blood males being attracted to the positive and optimistic attitude of O-type blood females, believing that they can bring freshness and vitality.
3. Sociocultural factors: In certain socio-cultural contexts, blood type may be assigned specific meanings or symbols, which in turn affect people's emotional choices and preferences. If men with blood type A are in a cultural environment where blood type O is seen as a symbol of positive traits or charm, then this perception may lead them to develop a special fascination with women with blood type O. However, it should be emphasized that this obsession mainly stems from cultural construction rather than biological facts.