Romanians are Latin people
Romanians are only Latin people in whole eastern Europe, so they are more friendly and open to things including sex, plus Romania is very poor country.
Materialism is everywhere, but in some nations it is more rebound of past, like eastern Europe they used to communist and everyone lived under suppression, so when capitalism came and they are free from suppression, they explode with easy money they got.
Plus it created class culture and bit cannibalistic culture where they get rich, they leave the country.
It is opposite culture of Germany and Japan. After we lost war. We became extremely poor and in bad situation in the world. But we kept our head down, using our brain and worked and those who got rich did not leave the country, but invested in the industries that created our strong hold in world economy in most areas whether it is car, bank, technologies etc.
However, since we worked for it, we tend to have tendency to be more conservative when it comes to buying material because we know what it took us to get to the top and simply both nations education system are pretty solid.
It is hard to determine exactly about the behavior difference of different countries, but the nations past, history, culture, and characteristic tendency reflect on how people behave, its industries and how wealthy the nation is and if it will sustain being on the top level or not.