When Libby met Gio in Rome was an important part in this story. I think so because it led to Gio eventually coming to the United States because they had  liked each other and kind of pushing Tony and Libby together by making Tony jealous in the bar when he was dancing with her and whispered in her ear. It also led to Libby having a very good friend because even after Libby had a child, she and Gio were still in contact with each other through email since Gio was still in Rome, and Libby in the United States.