What causes sexual attraction?

People are all involved in the filth of sex. One does not like presence of light during sexual activity. They get alarmed when the light comes on. Therefore they keep lights off. If the light falls on the spot of the sexual activity then one would not like that 'place of enjoyment', the organ of sexual interaction. That is  why, what has Krupadudev called the 'place of enjoyment'?

Questioner : 'It is not worth vomiting over'.

Questioner : Yet, what is the reason for being so attracted to that part of the woman's body?

Dadashri: This is due to our wrong belief. Why don't we get attracted to a cow's body part? It's only our belief. There is nothing except for our belief. Destroy that belief and there would not be anything.

Questioner : Do these beliefs arise due to circumstances coming together?

Dadashri : These beliefs arise by what others say to us. Then by supporting those statements, your beliefs become strong. After all, what is in there in it? Just pieces of flesh!

The thoughts of sex arise in the mind by themselves. You must cleanse them with pratikraman. Then you must never say that sexuality is good, and it should not be so in your behavior. You must not look sensually at a woman, and you must not touch a woman. If you have touched a woman then you should do pratikraman, 'Oh no, why did I touch her?' This is because thoughts of vishaya begin with the act of touching. 

Glossary : Pratikraman: Apology coupled with the remorse of any wrong doing; to propitiate the embittered soul , To repent for sins committed.
Vishaya : Sensual pleasures; Subject matter; Any worldly thing or subject one finds pleasure in. It also means sexuality; Sexual indulgence or object of sense pleasure and indulgence therein; Worldly objects of enjoyment; It also means a Topic or subject

Reference: Book Name : Brahmacharya : Celibacy - Attained With Understanding (Page #34,Last Paragraph , Page #35)