Born-again chritian marriage proposals - how should it be done?

Please has anyone out there, who is born again, spirit filled, ever fallen for a brother that came saying, God told him he was to marry that particular sister in question. He might have gotten this revelation through dreams, prophesies or a word of knowledge. Please is there any truth in this act of or are some fraudulent born-again brethren just using it to take advantage of the other involved? Please I need clarifications about this Holy ghost led/induced kind of marriage..