It wasn't Louis, at the door, it was Serena. They were already fully dressed and decent by the time she got in, and even though she was a bit intrigued by Dan's presence there, Serena did not take much thought into it. "I just came here to check on the bride! How are you doing B?" still feeling Dan's taste on her lips, Blair managed to answer "…Great, I'm great. Why don't you join our moms at the car Serena? I will be there in just a minute." "Sure, sure B. You are looking amazing by the way. Are you coming with me Dan?" He looked at Blair trying to find an answer, but she had the same look he had, they were both lost "Ahn, no. No, actually I'll stay here and help Blair with this hair, flower thing." And once again Serena could tell there was something strange going on, but as always, she sooner got her mind on something related to her.
As soon as Serena left, Dan and Blair found themselves with nothing to say one to another, but yet, everything. They knew exactly what they wanted to do, but they couldn't. Suddenly she couldn't even look him in the eyes, she was afraid she wouldn't control herself if she did. "Blair" He said and she kept looking to the window "Blair, look at me" He said while gently lifting her chin, so that she would face him. Looking him in the eyes things seemed harder than ever "Don't you understand? I can't do this. Louis is my prince. There is absolutely nothing wrong about him, I need to go out there and marry him." They were so close he could feel the heat from her mouth as she spoke "There is absolutely nothing wrong about him, yet, he is not the one you want. Am I wrong? Because if I am, feel free to walk away from me now and go marry your prince Blair. Do that, if you can honestly tell me there is nothing between us. If you can tell me you feel about him as you feel about me." She couldn't, and she didn't. Instead she did what they were supposed to have done before Serena walked on them. Her forehead meet his, he is grabbing her hair like he was about to lose her, her hands are suddenly at his belt and he is already unbuttoning her dress. They know what they are doing is wrong, but that only makes it better, they want to stop it but they can't. He moans her name as she bites his bottom lip and keep like that until it's time to face the facts: There is a crowd out there, including the royal family, their own and the whole media, waiting for Blair to arrive with her stunning dress and say "I do" to her prince.
She can't marry him, not now, not ever. She knows he is perfect, but maybe too perfect. She is not perfect, she is stubborn, spoiled, she is flawed. And she needs someone as unperfected as she is. And even though she knows all this, she can't simply go out there, face everyone she's ever met and tell them this. " I can't face them" She tells him with her hands shaking "How am I supposed to tell them I don't want to marry Louis? How would he react? How would my mom react? What about all the media I called? I can't Dan." He knows she is not gonna like what he is about to tell her, but he does it anyway "Run away with me".