It was 6am and Blair Waldorf was hunched over the toilet emptying the contents of her stomach. Tears stained her face. "This can't be happening!" she thinks to herself.

She'd been all right for 6 months. Six months and not once had this happened. How could she be relapsing, after all those sessions? She thought that she had recovered. But here she was feeling queasy and vomiting again.

When her light-headedness passed. She pulled herself up off the floor and over to the hand basin. She looked at her dull face and lifeless eyes in the mirror. Something was different. Before she willed herself to be sick but now she wanted nothing more than to stop. She reached for her phone and dialed Serena's number. It rang three times before she picked up. A sleepy Serena answering the phone.

"S I need you" Blair pleaded, "I can't stop. Please come."

Serena was suddenly wide-awake. There was no need for Blair to explain. Serena knew exactly what was wrong.

"B I'll be there in 10 minutes!"

"I'm sorry to wake you its just.." Blair's voice trailed off.

"B I'll be there. Don't worry." Serena said reassuringly.

Blair knew Serena would know how to fix this.

At exactly 6:10 Blair heard the elevator bell ding and Serena calling her name. S ran to her best friends bedroom only to find her crumpled on the floor of the bathroom. Serena had never seen Blair this disheveled ever. Even when this started she always managed to look graceful. But now, the girl on the floor looked nothing like Blair Waldorf.

"I don't know what's happening to me S" Blair cried.

"I thought everything was ok" Serena asked calmly.

"Me too. I thought yesterday was just a one off thing. But here I am again this morning same time" Blair whimpered at the realisation she was relapsing and she couldn't control it.

Serena sat down next to her best friend and held her. "What do you mean you can't control it?

Blair looked up at Serena, annoyance clearly visible in her expressions.

"Like I wake up every morning at 6 and this wave comes over me and I feel sick and then here I am on the floor crying."

Serena is confused. This isn't like the last time. Everything is fine. Blair is happy. Isn't she?

Serena just looks at her best friend. Confusion washes over her. This isn't like before and Serena doesn't know how to fix it this time. Trying to lighten the mood of the already depressing Saturday morning, Serena jokingly says, "Maybe it's morning sickness!"

Blair's body freezes up and her expression drops.

"Well I thought it was funny." Serena muses. But as her laugh subsides she notices the change in Blair's face.

"B you're not pregnant are you?"

Everything rushes through Blair's head. "No I can't be. It's too early. I only slept with Chuck like... Christmas was 3 weeks ago, and the Ball was a week before that and Thanks Giving was 4 weeks before that meaning Victrola was 2 weeks before that...

Oh my god it's been nearly 2 and a half months since she slept with the infamous womanizer Chuck Bass."

Blair's heart drops and her stomach lurches as she once again leans over the toilet bowl.

Serena's concern grows as Blair continues to be sick and she hears Blair mumble something about 10 weeks. It is at this moment that Serena realises the severity of the situation and fears sets in. Because this time she knows there's no shrink that can fix this sickness.

"Blair how could this have happened?" "I thought you and Nate were broken up then?"

Blair lets out a whimper and slowly responds.

"S I never slept with Nate! It's not his." At this Blair breaks down.

Serena looks down at her best friend crumpled on her lap and realises she doesn't know what to do.

Minutes pass. Both sit there comforting and being comforted in silence. However Serena is racking her brains, trying to find the right words to ask her BF whom she's been sneaking around with. But she comes up blank. The silence says it all. Blair knows what Serena is trying to say.

Finally she comes out and says it and Serena is glad she is sitting down.

"I don't know what I was thinking. It's just he was there" she pauses before continuing, "I felt special. He made me feel loved." All the confessions spilling from Blair's mouth and still the question was unanswered.

Serena looks at Blair with her signature 'go on' stare, willing Blair to continue.

Blair looks at her best friend and takes one last breath.

"I've secretly been having an affair with...'" she hesitates "CHUCK " Blair releases the breath she didn't know she was holding.

That's it the cat's out of the bag and Blair knows it. She sees the disgust on her best friends face and realises no one is ever going to understand this.

She didn't even understand it. It was always supposed to be Nate. Her virginity was her most scared gift and it was supposed to be for Nate and Nate only. But somehow Blair Waldorf ended the evening of her break up slightly inebriated and in the arms of her ex's best friend a.k.a UES's infamous Chuck Bass.