The scheme usually involves accomplices, such as an interpreter and a taxi driver, all of which must be paid by the victim at an inflated price.
Everything is pre-arranged so that the wealthy foreigner pays top dollar for accommodation, is taken not to an ordinary public café but to the most costly restaurant (usually some out-of-the-way place priced far above what locals would ever be willing to pay), and is manipulated into making various expensive purchases, including gifts such as electronics and fur coats. The mark leaves just as alone but poorer at the end of the trip.
A romance scam is a confidence trick involving feigned romantic intentions towards a victim, gaining their affection, and then using that goodwill to commit fraud.
Fraudulent acts may involve access to the victims' money, bank accounts, credit cards, passports, e-mail accounts, or national identification numbers or by getting the victims to commit financial fraud on their behalf.
They tell their victims that they are lonely, supporting an orphanage with their own money, needing financial assistance because they can't access their own money in a combat zone, etc.