A/N: Another update! this one was particlarly fun to write so I REALLY hope you guys like it! Without further adu.....

D POV

Last week, Mark decided to give me a key to his house. Lately I seem to be getting there when he isn't there, and if Mer's not home, then I'm forced to sit in the driveway and wait. I'm beginning to think the alternative isn't much better. No offense to the Greys...but their house is creepy. Things creek and rattle and I sit in the kitchen, ready to bolt if the first weird thing happens.

I had been waiting half an hour for Mark to show up when he texted me, saying he had an unplanned basketball practice. Great, just great. I had stood up, preparing to lock-up and leave when Meredith walked in...with a guy on her arm. Now, don't get me wrong. I had told Mer we could see other people.. but I guess I just hadn't been expecting it.

I sat back down. I wasn't about to leave and let this loser wreck what I was trying so hard to keep built-up. Two weeks. It had been two weeks since we had agreed we could see other people. Two weeks since Mark had scared the living shit out of me. Two weeks since I decided no matter how much he scared me, I still wanted Mer. And then this.

Meredith finally saw me and jumped. I smiled when I noticed her loosen her grip on...him...and bring her arm to her side. He looked up then, too. I had seen him around school; Alex Karev. He leaned over and whispered in her ear.

"Meredith...what the hell is Derek Shepherd doing in your kitchen?" I heard him ask.

"Ask me yourself. I'm right in front of you." I said with a hint of anger in my voice as I walked closer.

"Oh..uh of course. So..what are you doing here...?" he finally asked.

"I'm a friend of Mer's." I explained, smiling at him.

"He's my brother's friend." she told him as she glared at me. Karev just looked confused. Good.

Finally, Karev decided to go upstairs. Mer told him she needed to talk to me and she'd be up in a minute.

"What do you think you're doing?" She whisper-shouted.

"I don't like him! There's no telling what hes going to try with you..." I responded.

"Nothing more than what you did!" her voice then dropped a pitch. "Come grind with me!" She finished.

"Are you mocking me?" I asked, eyes narrowed. "I was kidding!" I leaned in close "Not that I wouldn't like to." I whispered.

I backed up and smiled at my handiwork. Thoroughly flustered. Just the way I liked her. Suddenly Karev's voice broke through our bubble.

"Mer? You comin'?" he called.

"Yeah Mer, you comin'?" I mocked. I smacked her butt lightly as she went up the stairs and when she spun to give me a death glare, I backed up with my hands raised.

"I swear, Derek!" She threatened.

"I'll be good! I swear" I responded, "and....ifImnotyoucanpunishme." I added quickly. She let out a frustrated sigh and I couldn't help but smirk.

M POV

Things were awkward on an extreme level. Sitting in my living room with Derek on my right and Alex in front of me.

"So...Karev-" Derek started.

"His name is Alex!" I hissed. He didn't even blink.

"So Karev. How'd you meet Mer?" he asked.

"I uh...well...we're in biology class together and she asked me if I wanted to come over and study...study date..." he stopped his explanation when Derek's eyes narrowed and I elbowed him in the ribs. "Well not a date date I just umm...well. You're real protective of her aren't you?" he finally asked.

I groaned inwardly. I just knew Derek would say something...some kind of innuendo or something to try and tip Alex off and ruin my study date. It wasn't even a real date...its just that being around Derek and liking him and not being able to do anything about it...it was frustrating. I needed someone I could talk to and tease and hug...i was beginning to think Karev-Alex- wasn't that person.

"You could say that. Just watching out for my Mer, here" he punctuated his sentence by wrapping his arm around me and pulling me against him.

"Your Mer?" I asked angrily as I squirmed out of his grasp. Resistance was futile. Derek underestimated himself sometimes, when he said he was weak. If this was any indicator...Derek Shepherd was anything but.

I couldn't help but relax into his grip when he casually stroked my arm with his index finger. Alex, being his oblivious self, hadn't noticed a thing other than the scarily protective junior staring him down. He probably thought the whole "grab Meredith and hold her against you" thing was nothing more than brother-to-sister love. If the last few weeks were anything, I'd say that Derek and I were far past brother-to-sister love. I sighed inwardly. So much for seeing other people until we worked stuff out.

"-should go. Dinner's in a few anyways..." I heard Alex say.

"Huh?" I asked.

"I said I think I should go. Dinner's soon and Mom hates it when I miss dinner. Uhh..I guess it was...nice? Hanging out, Mer..." He looked at Derek and merely nodded his head. "See you tomorrow!" he called as he went out the door.

"Oh God..." I whispered quietly.

"Wait...tomorrow? Mer, tomorrow's Saturday...why would he see you tomor..." he trailed off. "Oh. You have a real date." he got up and began walking down the stairs towards the door.

"Der! Wait Der!" I ran down after him. "Der I'm sorry. You said...so I just...and he-"

"You'll just have to cancel." he interrupted.

"Yeah. I'll just have to-wait what?" I was perpetually confused.

"Cancel. You'll just have to cancel." He looked at me like it was the simplest thing in the world and began to walk around to the side of the house.

"Wait! Who the hell do you think you are?!" I called, running after him. "Since when do you get to tell me who and when I associate with!? You arrogant jackass!" he spun around. Uh-oh. Oh God...I crossed the line with the jackass thing, I just know I did. "I mean..." I started again. He actually looked pissed. "why should you get to tell me if I can go on a date or not?" I tried, quieter.

"Since. You're. Mine." He said. Before I could even ponder what he was saying, I was against the wall.

His lips were against mine in a bruising way, much like my back was against the brick of my house. I felt the vibration of his moan in my mouth as I got caught up and ran my fingers through his hair. His mouth slipped down to my jawline and from there, to my neck. I whimpered quietly when he nipped me. He worked his way to my ear, where he sucked on my earlobe gently and whispered into my ear.

"Like I said. You'll. Just. Have. To. Cancel." he backed off a little then. I couldn't function. He was trying to hand me something. I realized a second later that it was my cell phone. I took it and stared from him to the phone, then back again.

"Well, how will he know the date's off if you don't call him?" he asked logically. Good point.

As I scrolled through the "a's" in my contacts, I felt myself hoisted up against Derek and I instinctively wrapped my legs around his waist. I heard him groan quietly and I giggled. I finally found the number I was looking for and hit send.

D POV

Feeling Meredith's legs wrapped around me was like nothing I had ever dreamed. The heels of her feet dug into my back slightly and she had one arm draped around my neck. I heard the ring of the phone and set to work, sucking gently on her neck. Her eyes closed as her head fell back against the brick.

"Don't hurt yourself babe," I found myself quietly saying.

"Al-Alex." she started. "Listen, my brother came home." She stopped talking and I assumed I had found a particularly good spot on her neck. I backed off and she started again.

"He came home and said that we have plans all this weekend and that I can't do anything. I'm really sorry and I hope we can catch up some other time." At the last sentence I bit the spot I had discovered, causing her to moan as she hung up the phone.

"I hope he heard that last bit. Maybe he'd get a freaking clue." I grumbled.

"God you're horrible, Der." she giggled.

"Horrible? Horrible?" I feigned hurt. "I'll show you horrible," I growled playfully before I kissed her again, pulling on her lip and nipping it."

"Der, believe me. That's anything but-ahh. Anything but horrible." she finally finished. She then leaned back, looking into my eyes. "We're crossing the line here, Derek. Definitely crossing the line." she finished with a sigh.

I chewed on her ear gently as I mumbled, "This line. Maybe we should make it clearer. I could get you a marker....or sidewalk chalk or-" I didn't get to finish because of the playful hit Meredith swung at my chest. "Okay, okay," I said laughing, "you're right, we're definitely crossing the line. But Mer?"

"Yeah?" she asked.

"You're forgetting. I live for danger." I smiled and gave her one last kiss before I set her down on the ground and followed her back into the house to wait for Mark.

Ok, so I have a huge favor to ask! You don't have to. But you guys have no idea how much it would mean to me, if you like my story...will you add it to your favs? Pleaseeee. I just get so encouraged when i log on and find that my story has been added to a few more favorites lists. Thanks so much! R&R!