Thank you Joe for sharing about you!! They are Indian!! And there are many different customs in Hinduism too, so when in North India it is considered against religion and culture, but in some other provinces, it is permissible. Read here to know more about it:
https://lovematters.in/en/news/it-ok-marry-my-cousin
https://lovematters.in/en/love-and-relationships/should-i-have-sex-with-my-cousin
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Thank you Joe for sharing…