Why does Buddhism say that the person you love in this life is someone who had hatred in previous lives?

There is not a word in Buddhism that the person you love in this life is the person you hated in the last life. Buddhist scriptures only tell you that the people you love in this life are doomed in previous lives. These people become your parents, wives and children according to different karma. This is what goes around comes around. The so-called four-way gathering, debt collection, debt repayment, revenge, and gratitude, they get together with you, which is these karma.