sex and the city in occident

why is 《sex and the city》popular in occident？

what does “is fallen in ” mean？ what does “is fallen in ” mean？

Portuguese I need to work in Portuguese for sometime， but i never learned portuguese, it is tangled. should i learn it?

what's difference between love and like？

there are many people there,but how can we make friends with others? we always say we are freiends ，but we comunicate lillte and haven't improve our language