Surgical passion *Derek Shepherd*

09-Who's zoomin who

Cassie frowned to herself as she woke up in bed. She heard the sound of arguing and rolled her eyes as she rolled over into dereks chest. He wrapped an arm around her and held her close

"You know that this house is like a sorority house" he said as she sat up and smirked

"You love it here" she said as she leant in and kissed him. He pulled her close as he rolled over so that he was on top of her

"I think that it's you I love" he said as Cassie looked to him and smirked. She ran her hands through his hair and moaned against his touch as the kiss for more passionate.

She rolled over so that she was straddling him. He ran his hands up her waist and smirked as he looked to her

"And I love you too" she said as he smirked. She pulled her top off as he grabbed a condom off of the side as he handed it to her.

She looked to him and smirked as she slipped it onto him and smirked. She straddled him and slipped down into him and moaned as she started to rock her hips against as he gripped her hips and pulled her close.

Derek flipped them so that he was on top of them. They felt the sheets drop off of them but didn't care.

Cassie rolled her head back as she dug her nails into him. She couldn't feel herself get close as the bedroom door opened

"Hey cass...oh fuck no. I'm scarred for life" Elle said as she walked into the room onto to turn her back on what she had saw

"You know normal people knock" Derek said as he pulled out of Cassie and pulled her sheets back over them

"Normally people cover up now I have the image of my brothers in laws ass printed in my mind as he rides my sister and not the one he is married too" Elle said

"We'll she normal rides me so i thought we'd swap" Derek said earning a slap from Cassie

"I need therapy. When it comes to you two" Elle said

"Just cause your not getting any" Cassie said as Derek phone rang as he picked it and declined it. Cassie looked to him and frowned

"Shouldn't you get that. It could be the hospital" Cassie said as Derek looked to her and smiled

"It's not" he said

"Breakfast? You gave me an appetite" Derek said as Cassie looked to him and smirked

"Ugh your so gross" Elle said as her phone rang as she looked to it and declined him

"You okay?" Cassie asked as Elle nodded

Elle knew it was addison calling her and she knew that she couldn't tell Cassie. Especially when Cassie was so happy with derek

•••

Elle walked down the hallway with Cassie.  Cassie looked to her and frowned. Cassie wasn't stupid and she could see that something was going on between her sister

"What's going on with you? You've been off. You know that you can tell me" Cassie said as Elle looked to her

"It's nothing to worry over it's just someone I don't want to speak too" Elle said as Cassie looked to her and smiled