There’s this guy I know of, Joe, who is getting married soon for the second time. He has converted to Catholicism to please his bride, who wants to get married in the church. By her beliefs, any other manner would not be a true marriage! A sample official church statement on the subject is,
… a Catholic who married otherwise than before a priest and two witnesses entered a marriage which is illicit and invalid in the eyes of God and of His Church. It is no marriage at all.
He was married before—in a non-Catholic setting, of course. His bride’s church insisted he go through the very arduous annulment process.
Why? By their own law, he has never been married before!