He knew? He knew about it. How come he said nothing before? Why, why did he remain with her despite knowing? Why did he put up with so much of her selfishness? No, why is she so surprised? Ever since they got engaged, Allen has sacrificed so much for her. She's the selfish one, not him.
"Leaving Lyn in your hands, I've always been uneasy, and even now, I still am. She broke down crying because she couldn't do anything to help you. In the first place for Lyn it has always been about you, so you don't have to worry about anything happen. Cure your addiction first before you properly confess to her," Allen stood up and slipped on his coat on and turned to her, "Take care."