What if he had no pre-nup? Does his wife now own part of Facebook? For starters, Arizona is a community property state and that means that all property acquired during marriage is presumed to be “community” property which means it is owned equally. But there is also the concept of sole and separate property which is property owned prior to marriage or property acquired by gift or a will. Mrs. Zuckerberg would be entitled to a “lien” on Mark’s sole and separate property and that is when the litigation usually begins…if people do not have a pre-nup. But we are not going to worry so much about all that now (but if no pre-nup, he could get a post nup) and instead we wish the new couple all the best for a long and happy marriage.