But her girlfriend is.
I knew a sea captain’s wife. When he was away she would drink wine on her porch. I walked my dogs past the porch each day. I was immoral and lonely in those days. One day she invited me up for a drink. The evening progressed and we went back to my place (she had children). Things were headed where you would expect when she mentioned her husband’s name. His first name was the same as my fathers. I escorted her home without doing anything and slipped into a gently circling bed from the booze.
A few weeks later a neighbor told me that the kids had found her in bed with another neighbor. That neighbor wasn’t a guy.
So I’m saying marriage has little to do with it when you come down to brass tacks, especially when you are dealing with a billionaire that can make whatever arrangements she wants to.