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…..

Mark's phone began to ring.

"Ignore it," He whispered, looking into Lexie's eyes.

"It might be the hospital," She pointed out.

Mark sighed and picked his phone up off of the kitchen counter.

"It's Julia," He whispered and his heart sank to his stomach. "I have to talk to her."

"I know," Lexie whispered, cupping his face in her hands. "I love you." She kissed him again and walked out of the door. As much as the two of them wanted to start right where they left off, they both knew that they couldn't do it while Mark was still in a relationship. What was one night when they had their whole lives ahead of them?

…

The next morning, Mark took Meredith and Derek's spare key from under their mat and snuck into their house. He tiptoed up to Lexie's room, coffee and donuts in hand.

He stood in her doorway staring at her. She was spread out across the bead, one hand on the floor. Her hair was splayed in every direction and her mouth was slightly open. Her blanket was tangled around her legs. She was beautiful.

He gently put their breakfast on her nightstand and crawled into bed next to her.

"Good morning," He whispered and she turned to face him.

'Hi," Lexie said softly. "Did you talk to Julia?"

"She was pretty upset, but we're done. You and I are in it for the long haul this time."

Lexie sat up and looked at Mark. "Good," Lexie said with a small smile, gently kissing him.

Mark grinned and turned to get the box of donuts, "How about a little breakfast in bed before work?"

Lexie's face fell when he mentioned work. "What do we say? Should we keep it a secret?"

"Absolutely not," Mark said sternly. "We're together, we love each other, and we're going to act like it whether they like it or not."

Lexie nodded, a grin spreading across her face.

….

That morning the couple walked into the hospital hand in hand.

Mark walked Lexie to the resident locker room.

"You sure I can't talk you into plastics?"

"Mark," Lexie said with a small smile. "Plastics will always have a special place in my heart, but neuro is where I want to go."

"Fine," Mark said with a small grin. "I guess Shepherd is good enough for you."

"What about my husband?" Meredith asked walking up to the door.

"Nothing, Lexie was just talking about how much she loves neuro." Mark responded.

"You two did it," Meredith said with a smirk.

Mark grinned and kissed Lexie. "See you at lunch. " "Big Grey, Little Grey," Mark addressed the sisters before leaving.

It sent chills down Lexie's spine to hear her old nickname.

She turned to see her sister eyeing her. "We didn't DO it, we got back together. There is a very distinct difference," Lexie said sternly before opening the door and walking in to the locker room.

"You and McSteamy totally did it!" Cristina exclaimed as soon as Lexie and Meredith walked into the roon. "Pay up Evil Spawn!" She said turning to Alex.

"You bet on my relationship?" Lexie asked in disbelief.

"Lexipedia, you and McSteamy are predictable," Cristina said with a snort. Alex and Meredith began to laugh as Lexie walked over to her locker.

"What's so funny?" Jackson asked as he and Meredith walked into the room.

"I won a bet on Lexipedia and McSteamy," Cristina said with a snort as she began to count the money that Alex handed her.

"Oh…" Jackson said, awkwardly and silently walking to his locker.

"Dude, don't be melodramatic. It was inevitable," Alex said with a snort, getting up and leaving.

"Yeah, I guess it was. Congrats, Lex," Jackson said with a sincere smile.

"Thanks," Lexie said with a wide grin.

…..

That night Lexie walked into the resident locker room to find Mark waiting for her.

"So I'd say the restaurant is probably closed by now," Mark said with a chuckle.

"Dinner?" Lexie asked curiously.

"I wanted to surprise you with a real date; to celebrate us."

"I'm so sorry, I was doing Mark's post ops. And then I helped him and his sister with an impossible tumor. I spent hours timing them, but they think they can get it. And it was just an incredible rush, like word impossible doesn't really have meaning anymore. And now I know, without a doubt, that I want to specialize in neuro," She looked up to see Mark grinning at her. He missed her rambling.

"You're a bad ass," Mark said with a laugh, wrapping his arms around her.

"I'm sorry about dinner," Lexie whispered, pressing her forehead against his.

"Life of a surgeon," Mark said with a laugh. "What do you say we head back to my place and order a pizza?"

"It sounds wonderful," Lexie said, kissing Mark.