Darcy's Weird Actions

Today, Darcy and Bingley came to visit my family. I wanted to tell Darcy of my gratitude; however, Darcy was quiet and rarely spoke or looked at me. Why did he come with Bingley if he was just going to sit and be taciturn? If I wanted one person to be silent, I wished it was my mother! How overcome with embarrassment I was as she acted so coldly towards him. I wish my family knew all the good he did for them.