Serious relationships or one-night flick - people are different and want different things. The one thing connect them - they place their ads at AdultFriendFinder! Meet your future partner there, choose parameters and go!
Sex tourism often is concourse of circumstances. Tourists, women especially, don't aim to plain sex, human is a intelligent being, after all. Often relations in resorts include mutual affection and can be called romantic.
Some tourists are interested in serious, long-term relationship. That's the weakness numerous giggolos of developing countries play on. Many Asian bar-girls and just prostitutes use the same trick, trying to convince a man that she's not a prostitute, that she loves him madly and so on. These relationships last after a tourist come back to home. Both parts write e-mails, sms, and "new love" keep being supported with cheques and gifts. Prostitutes who get money from men abroad to live normal life without prostitution keep doing their job. Such women often have husband of the same nationalaty as they are, who don't have a work and don't mind what she does since she earns money with it.