Young Thais were encouraged to visit temples instead of having sex on Valentine's Day, 14 February.
The western celebration of love is becoming a popular occasion for teenagers to lose their virginity, surveys suggest.
Is Valentine's Day still a celebration of love? Was it ever a celebration of love, or just another marketing gimmick? It would be a shame for Thai teens to lose their virginity over a marketing gimmick.
But with concerns about teen pregnancy rates and HIV infection growing, authorities are called for the country's youth to abstain.
They have also made millions of condoms available in healthcare centres and hospitals around Bangkok.
BBC News spoke about the issue to two young Thais who agreed that Thai teens need to learn to practice 'safe sex'. But they thought it would be quite appropriate to start the day at the temple and then go out for dinner and a movie, etc. It appears teens are teens wherever you go.