Buddha said that if a man has these 5 qualities or factors, then he is a desirable man to women. On the other hand, if a woman has those same 5 factors, then she is a desirable woman to men.
So, if you don’t have any of those factors, then you might be a less desirable person to your opposite sex.
Quality No 1 : Rūpavā ca hoti- He/She is physically healthy and attractive. He/She takes good care of the body and mind.
Quality No 2 : Bhogavā ca hoti- He/She is wealthy and financially well managed. He/She knows how to make money and manage it skillfully without creating any troubles with laws and regulations.
Quality No 3 : Sīlavā ca hoti- He/She is ethical and virtuous. He/She has a good personality with a charismatic character.
Quality No 4 : Dakkho ca hoti analaso- He/She is a persevering and industrious person with survival and technical skills. He/She is not a lazy person.
Quality No 5 : Pajañcassa labhati-He/She is very enthusiastic and concerned person for continuation of his/her future generation. He/She is a community builder and a social worker.
Read the Mātugāma Sutta
Read the Purisa Sutta