A/N- Bit of a filler, but Meredith needed some input.

Disclaimer: Don't own Grey's anatomy or anyone resembling any of the characters.

When Derek got out of the shower, with nothing more than a towel around his waist, he found Meredith sat on their bed, his blueprints covering every space, a notebook in her hand, listing the changes she wanted to make to their house. His breath caught when he realised she was looking at the plan for the uppermost floor. The one he'd decided would be for theirs and their children's bedrooms. He stood and watched her for a few minutes, only sitting down when he saw he begin to frown at the document on her lap.

"What's wrong?" he prodded gently hoping that she'd share her thoughts with him.

"The kids rooms are too small Derek!" she scolded him "that nursery is nowhere near big enough for all the baby furniture. And where are our kids toys gonna be if we force them to live in these little shoebox rooms? And I don't see why we need a guest room upstairs, no one's ever going to be a guest in our house if they can't sleep because there'll be 5 chatty children who snore, and I'll snore and they'll never be able to get to sleep…" Derek interrupted her with a kiss, but she quickly pulled away from him. "Derek, this is our life, I need you to care about it for a moment."

"Okay okay, we'll fix it." He soothed, taking some of the other blueprints into his hands. How about we move the guest room downstairs, and we can put a playroom in here," he said pointing to various points on another blueprint.

"Well then the kitchen is smaller" she retorted.

"Well we'll just take out the breakfast bar." He stated, thinking this would solve the matter.

"No!" she said.

"No?" He raised an eyebrow as he tried to see the problem.

"No, we need the breakfast bar, so we can all sit down as a family on Saturday mornings and eat together, like families are supposed to. Just like we need the space in the living room for the baby swing that we'll need, and the beanbags for film nights" she frowned when she realised Derek was laughing at her. "We may as well just not have any kids, seeing as their father wants them all to live like battery hens with no breakfast bar or room for cushions or… or…" Derek kissed her again, letting go of his towel and laying them both down on the bed, her head against his chest breathing in the smell of his soap.

"We'll just make it bigger mer," he said pushing her away so that he could look into her eyes. "We'll do whatever you need. Whatever our kids need, we'll do it. We have the space, we have the money, we'll do whatever you need to make it perfect." He laughed again.

"What?" she frowned.

"Nothing." He reassured her "I just didn't think that this was the part you were gonna freak out about."

"Like I said," she informed him "all grown up and healed."

"Well, you know what grownups do," he said kissing her neck, sucking on the places that he knew she liked. Groaning as her hand snaked under his towel and stroked him gently, taking him in her hands as he began to undo the buttons on her blouse, pushing the material down her arms as she began kissing his chest, moving up to his neck, her jeans rubbing against the towel, causing him to harden against her. She undid the button, and slid the pants down her legs, throwing them down on the ground as her lips found his, her tongue snaking in and out of his mouth, as they both began to breathe heavily, their heart rhythms perfectly in sync. As Derek slipped Meredith's panties off, and rolled her onto her back, he swept the blueprints down onto the floor, moving his kisses back down onto her neck, taking her breasts into his hands, massaging her nipples between his fingers as she gasped at his touch. She whipped the towel out from beneath him, leaving them both naked on the bed, her hands reached down to him, as she tried to guide him towards her, but when he pulled away she began rubbing the warmth of her folds, making her hips rock against his, moaning once again when he took her nipple into his mouth and replaced her fingers with his own, knowing she would peak soon and encouraging her to go over the edge. As she began to scream, he teased her with the tip of his erection, knowing how much she wanted him there, but dragging their pleasure out as long as he could.

"Now Derek" she gasped, grinding her hips into his groin, grabbing his ass in her hands, pulling him closer to her. He finally obliged, and she gasped as he pushed further into her, waiting for her body to accommodate his size. "move" she groaned, her breath catching in her throat as he slowly withdrew from her, and thrust hard into her, making her moan beneath him. She bucked her hips, to get him to move again, and he obliged, slowly withdrawing and thrusting until she screamed out in anticipation. "faster" she screamed "harder" he obliged, increasing his pace, and grabbing hold of her hands, pinning them above her head as he drove deeper within her, continuing until he felt her walls begin to spasm around him, and her screams grow louder, sweat shimmering on her forehead, knowing he could wait no longer he let himself go, making her scream again, her heartbeat audible even from his place above her. He collapsed down on her, his head on her chest, as they both came down from their highs, catching their breaths and holding each other, neither breathing a word, savouring the fact that this was the start of their future together. This grown up and healed. This was perfect.

MDMDMDMDMDMDMD

While Meredith slept, Derek decided to call his mother, it was early morning in New York, but he had no doubts that she'd be awake, probably sat with a cup of coffee reading the newspaper waiting for one of her kids or grandkids to ring or drop by, she was rarely without someone in the house or on the phone. He felt as though he had to call her now, she'd phoned a few weeks before and Meredith had answered, spending nearly an hour on the phone with her before Derek walked through the door with the groceries he'd popped out to get. When she'd passed the phone over his mother had gushed about what a lovely girl she was and made Derek an offer which hadn't really crossed his mind until now. He walked into Alex's room, he was on call so wasn't home, and dialled the familiar number, listening to the rings until his mothers voice echoed on the other end.

"Hello?" She answered looking at the caller ID as she brought the phone to her ear. "Is that you Derek, sweetheart?"

" Hi Mom," Derek said, keeping his voice down, Meredith was asleep in the next room and he didn't want her to wake up and hear what he was saying. "I need to talk to you about the offer you made me."

"I knew it." Carolyn said from the other end of the phone. "I knew she was the one for you. Half an hour on the phone and I knew. When baby?"

"Um…" he pondered. "I think soon. I need to get a few things straightened out, but I think I'm ready, and I'm fairly sure she feels the same way. I haven't slept at the trailer for weeks now. Mark things I'm neglecting him because I want to be with her all the time. I just… I think it's time ma."

"Derek, when you told me you wanted to marry Addison, I supported you. I knew it took you a long time to get to a place where you felt you could commit to another human being and I knew that you thought it was the right thing. So we stood and we watched you marry her and buy a house and achieve all those things with your careers. I watched as you lost your spark and you got lost in the day to day stuff. The things you thought you should be doing with the people you thought you should associate with. And then when Addison…" she cut off not wanting to remind him of his ex-wife's disgressions and the pain it had caused him. "When she did what she did, I saw how relieved you were. I saw you find a way to escape; I saw the twinkle in your eyes when you said that Seattle was your new home. And when you told me about Meredith, I heard it, I heard my Derek again. She brought you back to life Derek. Even when you tried again with Addison. When that bomb went off, you weren't telling me about addy or about burke, you were telling me about Meredith, how brave Meredith was, how scared you were when you were told that it was her. If it'd been Addison on that table after you pulled her out of the water would you have let them carry on, would you have fought to bring her back, sat outside her room and cried. No, of course not. She was a nice placeholder, but Meredith, Meredith is your soul mate. When you weren't home and she answered your phone, she didn't tell me about how wonderful or terrible things were in her life, she told me what a wonderful son I raised, how he made her feel special, and safe, like she could achieve anything. And she didn't have to say that, she didn't say it because that's what I wanted to hear, she said it because she wanted to tell someone. She wanted to shout it from the rooftops. She wanted everyone to know just how much she loved Derek shepherd and how much he obviously loved her. Meredith is special Derek, dad would have loved her. He'd've been out there putting that ring in your hand right now. I'll book my flight, and I'll see you in a few weeks, meet her myself. I love you sweetheart."

"I love you too mom." Derek hung up and slid back into bed with Meredith. She stirred and opened one eye to look at him.

"What're you doing?" she asked him snuggling back into him as she went back to sleep.

"I was talking to my mom, she wants to come down and see the house plans before we finalise them. She crammed five kids into our house; she's good with these kinds of things." He waited for her to freak out, but she didn't.

"Okay." She smiled sleepily. "Just let me know when and I'll book some time off." Meredith couldn't believe those words had just come out of her mouth, but it was true. Meredith grey was going to meet the mother.

A/N- a little porny i know, but they're only human! I know it's a bit weird having Derek talk to his mom after, but it didn't fit anywhere else and it's a nice lead up to the next few chapters.

Reviews would be awesome :)