Tinker here the case is different. It is not considered a major sin if the girl chooses her own groom or the boy his bride if they are from different clans. The clansmen object to marriage within their own clan. And sometimes all the villagers in a particular village or community are of the same clan. And often the boys and girls don't get to mix with people from faraway places or other clans. Here lies the problem....where girls and boys fall in love with someone from their own clan or even bearing the same surname..which is a major taboo among the Hindus of Northern India.