A/N: This is my first Gossip Girl fanfic and the first fanfic I have written in over 7 years so please be kind. I do not own Gossip Girl or any of these characters. Instead, I am a poor law student who makes zero money from doing this. Reviews are love.

With Every Mistake We Must Surely Be Learning

Spotted: Blair Waldorf making a mad dash to the ladies room during dinner with Nate Archibald and Serena van der Woodsen. Normally B's bathroom activities wouldn't be a source of intrigue, but this is now the third time this week that B has been spotted leaving the dinner table in a rush. So what do you think kiddies, is B pregnant or has her mysterious disease returned?

"We have to say something," Serena van der Woodsen whispered to the brown haired boy sitting next to her. "I'm worried about her."

"I know, I know, I am too. But shouldn't this really be a conversation you two have alone?" Nate Archibald whispered back.

A confused look appeared on Serena's face. "Why? You're her friend too."

"Of course I am, but I mean what if Blair's really pregnant. Do you think she's really going to want to talk about it in front of me?" Nate responded his eyes still glued to the back of the restaurant waiting the return of their other friend.

"You don't really believe the Gossip Girl blast do you?" Serena asked, slightly shocked. "Blair can't be pregnant. There's no way."

"Well, this wouldn't be the first time she was a little less cautious than she should have been," Nate said alluding to Blair's pregnancy scare during their junior of high school. "And besides with the amount of sex she and Chuck had during their détente, don't you think it's at all possible that they slipped up once?" Nate answered.

"That is true," Serena mused thinking back to Blair and Chuck's behavior a few months previously. "All right, I'll talk to Blair when we get home. Oh, here she comes act normal."

"Hey Blair," Nate said as Blair sat back down beside him. "Is everything okay?"

"Of course everything is okay," Blair said with a slight coldness in her voice. "Just a little food poisoning is all," she added at which Serena and Nate exchanged surreptitious glances.

"What's the matter with you two?" Blair asked. "Why are you looking at each other like that?"

"It's nothing B. We're just glad to hear you're feeling better," Serena replied sincerely. The truth was Serena was genuinely worried for her best friend. Whether this was pregnancy or bulimia, it was serious and Serena better than anyone knew how much Blair tried to ignore the serious things in her life.

Blair rolled her eyes. "Did you two at least manage to pay the bill in my absence?"

"Yeah we're all set," Nate said. "Let's go."

The three friends walked out of the restaurant and into the cold New York winter air. "Do you want to share a cab back uptown with us?" Blair asked Nate.

"Uh, no actually I think I'm going to head over to Brooklyn and watch the game with Dan," Nate said doing his best not to look at Blair. He was a terrible liar and Blair would immediately know something more was going on if he looked into her eyes.

"Okay, well then I guess we'll see you tomorrow," Blair responded pushing her curiosity about Nate's behavior aside.

"Yes definitely," Nate said giving each girl a hug goodbye and closing the door to the cab Serena had hailed behind them. Nate felt relieved as the cab pulled away from the curb. Serena would handle it. Everything would be okay.

On their way back to the Waldorf's apartment, Serena thought about how best to broach the subject of Blair's condition. Blair was going to be mad at her there was no way around that. By the time they were home, Serena still had not come up with a foolproof plan. Unlike her best friend, Serena was not great at orchestrating schemes. In fact, her past schemes had all gone majorly awry.

"Do you want to watch Tiffany's tonight?" Serena asked as she and Blair handed their coats to Dorota in the foyer of the Waldorf's apartment. "I'm in the mood for some Audrey tonight."

Blair narrowed her eyes at Serena. While she and Serena did love watching Audrey Hepburn movies together, it was usually Blair asking Serena to watch and not the other way around. "Sure," Blair said. "Let me just get in my pajamas first and I'll meet you in your room."

A few minutes later Blair entered Serena's room and plopped down on her bed.

"B before we start watching there's something I wanted to talk to you about."

"Of course there is," Blair said. "I knew you and Nate were acting weird all night. So what do you want to say to me?" Blair asked an expectant look on her face.

"Well, first I wanted to let you know how much I care about you and I'm only asking you this question because I'm worried about you." Serena looked up, hesitantly meeting Blair's eyes. "B, are you pregnant?"

Blair let out a small laugh. "You think I'm pregnant? I'm sorry, but you of all people believe what you read on Gossip Girl?"

"Blair it's not like that. I mean yeah I read Gossip Girl, but it just seems that whenever we go out for dinner you're constantly running to the bathroom."

"I told you I had food poisoning," Blair said coldly.

"I know, but you and Chuck had an awful lot of sex this fall and I just thought maybe…" Serena trailed off.

"You just thought what? That I never heard of a condom. You've had an awful lot of sex before and I never accused you of being pregnant did I Serena?" Blair shot back.

"Well if you're not pregnant, has your condition come back?" Serena asked prepared for, but hoping she would not have to suffer Blair's wrath. Unfortunately, Blair reacted exactly as Serena had expected.

"You are living in my house Serena and I will not be talked to like that. This conversation is over," Blair yelled back and stormed out of Serena's room. Serena leaned back against her pillows. This had not gone well at all. A few minutes later, the sound of heels click clacking down the hallway and the ding of the elevator door indicated that Blair had left the apartment.

Serena pulled out her cell phone to text Nate: "B left apartment mad. Did not admit or deny either possibility. We need to call C."

In Brooklyn, Nate pulled out his cell phone in response to the vibrations in his pocket. He read Serena's text message and sighed. This was not good at all. Serena had not gotten to the bottom of things and their only hope was someone Nate was hoping he would not need to call.

Spotted: Blair Waldorf leaving her penthouse looking furious. Nate Archibald catching a cab in Brooklyn looking noticeably worried. Hmm seems like Blair's condition has yet to be resolved. I wonder if Gossip Girl is accessible in New Zealand? Someone might want to tell Chuck he could be a father. You know you love me. XOXO Gossip Girl.

A/N: If you like what you read don't forget to review. Comments make me want to write more faster :)