There she was at the top of lobby stairs, to Derek she was the only girl in the world right then and there. The dress she wore perfectly fitted every curve of her petite frame and her hair loosely curled framing her face. Over whelming emotions of lust and desire surged through every inch of Derek's body however he was quickly reminded of his place within the situation upon Finns rapid departure from Derek's side to go and greet Meredith. He watched intently as they embraced, Derek's eyes fixated on Finn's hands as he watched them curve around her waist and pull her near. Derek's attention then shifted to her face. Derek did not know quite what he hoped her facial expression would be , sure he was the one who left her and he should want her to be happy but something inside him turned at the thought of her happy with another man. She was smiling. To anyone else that smile could have implied she was happy with Finn. However Derek new Meredith like he new the lobes of the brain. That smile ,he recognized it. This smile wasn't that she was blissfully happy it was a demonstration that she was content, content but not happy. Relief swarmed his body, something he could not control. It was then brought to his attention that his "wife" was standing in close proximity and could at any moment witness that Derek was quite clearly staring at Meredith and Finn. He had enough problems with Addison today he didn't need a repeat of earlier. Addison was mumbling about nostalgic memories something to do with star wars and in the hope that Addison did not pick up the goings on Derek asked her to dance despite his hatred of public dancing.

Derek watched as Finn placed his hands upon Meredith's waist, pulling her close with only inches between their faces. He could not distinguish what was being said but he new that Finn was trying to "woo" her. Several minutes later they embraced, holding each other tightly whilst slowly moving to the beat of the music. Meredith's back was facing him, that's when he saw Finns hand slowly move further down her back until it rested on the small curvature of her spine. A wave of jealousy plagued Derek's mind at the thought of someone else's hands on her. His sight then maneuvered to Meredith's face where he caught her eye for several seconds. Those small seconds provided the communication that a thousand words could not. He watched as the smile that previously occupied her face faded and she pulled away from Finn and proceeded to walk out of the "prom". Derek provided Addison with a reasonable and believable excuse , something about going to check on a patient, and subtly followed her.

Meredith ran down the hall desperate to get away from him, she could feel him following her and so in a desperate bid to lose him she ran into the exam room only to be followed by Derek. Meredith was close to tears and he knew it was because of him yet he asked her if she was alright anyway. Her reply was not surprising in retrospect. Meredith finished with:

'I can't breathe with you looking at me like that so just stop'

He had never quite realized that extent to which he watched her. Derek new that enough was enough the tension, the looks and the arguments all had to stop.

As she turned around to face him breathless knowing not what to say, Derek was plagued by desire for her. Just looking at her. Her lips, he longed to feel them, to taste them again. Her hair ,how he missed the smell of her lavender conditioner and the feeling of her hair through his fingers.

He took her hair in his hand and kissed her hard, with his other hand he grabbed her waist and pushed her near to him. Meredith responded by opening her mouth and throwing her arms around him pulling him near, this was a clear invitation for him to continue. The kiss was long and passionate but lust raged over them both and Derek wasted no time in removing her underwear from beneath her dress. Throughout the passionate kissing Derek had felt a warmth as Meredith removed his tie and began unbuttoning his shirt, it as if this what they needed a release of all their sexual tension. For Meredith it was something she had longed for , she had missed Derek's touch.

Derek was overcome as he pulled her dress down from her shoulder revealing part of her breast where he proceeded to pull her hair back gently to kiss he collar bone and neck he wanted her more now than ever before. He had missed her,it wasn't about the sex it was about being with her the safety he felt with her. Their chemistry was undeniable.

As they began getting dress Derek stood and watched her and it suddenly hit him that this had changed everything. Derek new that rightly or wrongly there was something between them that could not be repressed any longer. He watched as Meredith frantically looked for her underwear and commanded him to sort his shirt and tie. They both needed to know where they stood and what this meant now. Just then Dr Torres arrived at the door stating that Finn was looking for Meredith, as Meredith began to leave the room Callie pulled her back to tie her dress and fix her hair. Evidently Derek had left Meredith with sex hair. Callie glared at Derek ,as he continued to sort himself, and made it very clear that Derek was now in a dangerous territory. Just then Addison arrived questioning why he was inside an exam room, Derek being Mcdreamy used his charm to easily shrug of Addison, however he could not repress the overwhelming sense of guilt he had possessed.

GAGAGAGAGAG SEVERAL HOURS LATER GAGAGAGAGAGAGAGA

As Derek lay there beside Addison he could think of nothing but Meredith and what had happened between them in the exam room. After several hours he got up and proceeded to drive to Meredith's, he didn't care it was the early hours of the morning he had to speak to her he had to tell her how he felt. That he had made a mistake, he had picked the wrong women and that he loved her, he had always loved her.

Derek watched as a figure approached the door after several minutes of effortless tapping on the door, it was not Meredith but Izzie.

I-"Eh watch a doing here Dr Shepherd'

D-"I need to speak with Meredith , is she here?"

I-"Yes but …erm she's a little busy right now"

Derek completely disregarded what Izzie had said and walked past her to travel upstairs

I-"Um Dr Shepherd I wouldn't go up there if I were you ... Meredith is really busy.. oh shit.."

Derek continued up the stairs as he began calling for her "Meredith?! Meredith?!". As he entered her room he was confronted by a similar feeling to that he had felt in New York. Within Meredith's room was clothing littered all around, the clothing was not just her own. He recognized the cameo green jacket lying on the floor. Derek didn't have to time to think before he heard that infamous giggle. Meredith's giggle, coming from the bathroom. As Derek listened intently he could hear the sound of the shower and not just Meredith's giggling. Derek proceeded to burst open the door to find Meredith and Finn both in the shower, together. He felt sick to his stomach he felt disgusted and betrayed. Of course Derek did not bare witness to the fact that the two of them were not naked in the shower as he was blinded by rage. After the prom Finn had been called on an errand and took Meredith with him to birth a horse covering them both is hay and various fluids. However how was Derek to know this and as a result Derek fled the bathroom slamming the door in a violent rage and proceeded back to his car.