At the age of 18, Nabby met and fell in love with Royall Tyler. Her father thought she was too young to have a suitor, but he eventually accepted it. At one point the two were even engaged to be married. But John Adams, then the U.S. minister to the Kingdom of Great Britain, eagerly called for his wife and daughter to join him in London. For a time, Nabby maintained a long-distance relationship with Tyler, but eventually broke off the engagement, leaving Tyler depressed.