I in no way own Grey's Anatomy or its characters….

The rush of hot water streaming over her body released tension from her muscles that Addison didn't even know she had been carrying around. It had been a hellish day, avoiding Mark, the emergency surgery, the seemingly growing amount of patients…keeping whatever she had going on with Alex a secret. The thought of his name brought a smile to her lips. She closed her eyes and leaned further into the flow of the water. She could almost see him, his intense eyes; dark with desire, his lips; slightly parted ready to meet hers, not holding their usual cocky grin. The warm water hitting her face did nothing to bring Addison back to reality, if anything it was pushing her deeper into fantasy. Now even better than seeing him she could feel his touch. She had the sensation of arms enveloping her, strong, knowledgeable hands running up and down her wet torso. A moan escaped her lips. She leaned her head back as lips skimmed the column of her neck. It was only when the back of her head hit a very real shoulder that Addison was brought out of dream world back to reality.

She was not alone in the shower. A very solid, very masculine, very naked body was behind her. There were hands roaming over her stomach, making lazy circles on her breasts. There were lips kissing the sensitive area on her neck. She stiffened.

"Addi, relax."

It was not Alex's mouth that formed those words. It was not his warm breath brushing over her heated skin, nor was it his jaw rubbing against her shoulder. This particular jaw line was peppered with wiry stubble and was brazing her skin. Her fear faded, replaced by at first annoyance and then anger. She knew those hands, that voice, that eager and more than willing body. She whipped around sending the intruder stumbling back in surprise.

"Mark, what the hell are you doing in my shower and more importantly, how the hell did you get into my room?"

Mark took her in, all of her. She was gloriously naked. He still couldn't get over her beauty. Every time he saw her there was something new for him to marvel at. He had seen her naked so many times, actually he had seen her naked and wet more than his fair share, but here she was standing there so proud, so indignant, so regal. He wanted to scoop her up and ravish her then and there…in fact her planned on doing just that. He headed toward her.

"What the hell do you think you're doing? Stop Mark, I'm serious!"

She pushed him away, turned the water off and got out. She reached for a towel, wrapped it around herself and threw another one in Mark's direction. She took in his wet, sexy body standing naked in her shower. The confused look on his face would have in any other situation been funny. The haphazard pile of his discarded clothes and his obvious eagerness would have in another time and place flattered her, but today, today they made her angry. What made him think he had the right to invade her privacy anytime he pleased? They weren't living together. She hadn't made a commitment to him. Yes she had slept with him last night, but they had been using each other for sex since she found Meredith's panties in Derek's tux pocket. He had come to comfort. Then, when he had come to stay he helped her fill the loneliness of night, but that still didn't give him the right to sneak into her room and onto her anytime he felt the urge. Yes, the more she stood and looked at him, the madder she became.

"Mark," she took a breath to calm her nerves and lower the obvious irritation in her voice, "how did you get in here?"

"I got a key from the desk clerk. I wanted to surprise you."

"He's not supposed to give them out to anyone without my permission."

Even as she said it she knew that she was wasting her breath. What Mark Sloane wanted Mark Sloane got. It wasn't surprising that he had been able to finagle a key card out the desk manager.

"I just told him that you and I were an item and you had given me a spare copy, but I left it at the hospital and I needed to get into the room. He didn't put up much of a fight…he's seen us come in all over each other before. What's the big deal?"

"The big deal is that I don't want you in here. The big deal is that no matter how many times I've slept with you, we're not together. We're not going to be together!"

"You say that now…"

"No Mark," she cut him off mid sentence, "we're not going to be together. If I had wanted you, really wanted you, and if you had been able to want me the way that you were supposed to; we would be together; probably up to our heads in diapers and spit up. It wasn't in the cards for us then and it certainly isn't now."

"You're just saying that," he countered. His face was no longer a mix of confusion and desire. His eyes had gone hot and then icy cold. The faint lines around his eyes and on his forehead deepened as he drew his brows together in a frown. He wrapped the towel more firmly about his hips and stepped out onto the bath mat a mere three feet away from where she stood.

"No Mark, I'm not."

"Yes Addison you are because if you were really serious about us being finished then you would quit crawling into my bed every time you want to scratch the itch."

"What…."

"No, I'm not finished." His voice was loud now, full of anger and resentment. He did not like being rejected, but having Addison reject him over the same old shit that she pulled up every other week was not going to fly with him tonight.

"If you were so determined for there to not be an us, you wouldn't keep coming back. Admit it Addison, you love me. Deep down in there," he said pointing to her chest, "you're still hung up on me, on us."

Some of the fire that had filled her eyes dissipated. Not because there was any truth in his words, but because she knew what she had to do and she could see now that this was going to hurt him more than she had originally thought. He was still clinging to the shell of what they once had…he was still hoping. It was going to hurt, but she had to do it.

"Mark…I'm seeing someone." It was said quietly. There was no malice in her voice. It was just simply put out.

"What…Addison, you were just in my bed last night. You didn't seem too attached to anyone then."

"The truth is yesterday I was frustrated with him. He wasn't making a move and I was afraid to. I used you as a crutch and that was wrong. I'm sorry for that."

"You're still not giving me a straight answer. When did this so called relationship start? It couldn't have been very long."

She had seen the hurt. The instant she told him it was written clearly all over his face, but he had done a quick job covering it. The mask he used was anger.

"Last night, after I left your room he came to mine. We talked. I told him everything…the truth, you, sleeping with you last night was something that I chose not to keep from him. He had a right to know, but he chose me anyway. He loves me Mark…and I think I love him."

He didn't want to hear anymore; actually his heart couldn't stand for him to hear anymore. Where did she come off? He clutched the towel even more tightly; bent down grabbed his clothes and stormed towards the door without sending her another look. He threw it open with one firm yank and proceeded to run smack into Alex Karev.

TO BE CONTINUED…