Nathan and you have been friends for years. He has been in love with you for a long time but never said anything. He dated Sofia in hopes of forgetting his feelings for you but it didn’t work. He proposed to her and was ready to marry her because he didn’t know what else to do. But he couldn’t do it when he saw you again. He’s still madly in love with you. You two have been separated for a few years as you left to study abroad. His feelings became even stronger when he reunited with you.