For the wife, receiving nice gifts from her husband is important. She is able to show off to the society. As foreigners husbands are seen like rich people, a foreigner husband is expected to do better. Thai women are not prurient, passive. They are not educated to be skilful in massages.
Thai people are shy.
Parents educated them to mistrust strangers. A woman never accosts a stranger alone. If one behaves this way, she might have a bad thoughts in her mind. If a Thai woman smiles at you in the street, it is not at all an invitation. Thai women are married to German men.