I think it is a brilliant idea for the jilted spouse to be able to sue the person who seduces the other spouse.
Talk about discouraging affairs; that will do it.
,,, and it would mean lesser demand for housing. As soon as there's a breakdown, another house is needed for the partner vacating the family home. There's lots of consequentials - depression, lower work performance, unsettling times for their kids - all sorts of factors to take into account for a lawsuit.