Any well-travelled guy is familiar with women who ask them to pretend to be married to allow them to escape constant, occasionally dangerous male pestering. In Turkey, I even met a woman who carried fake wedding bands for this purpose. We hung out for a few days as a “married” couple so she could get relief from the constant harassment.
I was asked to do that in my hometown with a girl I had never met before. It’s not only tourists, and it’s not only in foreign places.
BTW, that girl had to be 5% handsy with me to sell the lie, and when I met her real boyfriend that same night, he pretended to be royally pissed for five seconds and I was so scared. He laughed it off. Good guy.