Add Washington state to your list. There is case law here whereby if you live together or demonstrate that you are in a domestic partnership, you can be liable

Add Washington state to your list. There is case law here whereby if you live together or demonstrate that you are in a domestic partnership, you can be liable for spousal support, using the same guidelines as divorce. And this is without signing any documents or anything “official” to mark the partnership. Edit: in fact, to make this even more messed up - Washington state had a domestic partnership law, then got rid of it. So now there is a giant legal grey area where the courts have basically said “we know it when we see it.”