Jesus said divorce is permitted in the case of adultery! So I'm using what Jesus said and what Paul said and pointing out that being unequally yoked is way worse than a husband cheating on his wife.. Because if that unbeliever is unredeemable they will do more damage than just cheating! Paul said basically try to save them but if they want to leave or get in the way of your relationship with God with ultimatums, the believer is supposed to chooses Gpd so the unbeliever would eventually leave. The person is not bound and is free to remarry in the Lord