While Jordan was imprisoned following a 1962 conviction for establishing a paramilitary group, Dior became engaged for around a month in June 1963 to another NSM member and friend of Jordan, John Tyndall. That event contributed to a growing feud between the two allies, which eventually led to a split within the NSM in 1964. Upon Jordan's release, however, Dior chose to marry him instead. Jordan proposed her in September 1963 during a flight to Britain; his relationship with Dior soon took priority over the movement.