A/N: Hello my darlings! This chapter is rated M...just so you're prepared. Hope you like it and let me know! Review!

Once they were in the car and on their way, Lexie relaxed a little bit and kept her hand resting on her baby bump. It occurred to her that Mark was never the type of guy to go on a date with a pregnant woman, which said a lot. Granted, she wasn't pregnant with just any baby, it still wasn't what she had ever pictured Mark doing when they first met and she got to know him. Their relationship was so tangled and complicated sometimes and others, when she was just at his place falling asleep in his arms, it was so easy.

"So…where are we going?" she asked, curious as to his plan for the night since he had apparently planned all of this out without her even knowing.

"That is a surprise," he replied coyly, avoiding her question.

Rolling her eyes, she laughed. "Always the surprising one, Mark Sloan."

"Actually, I think you take the cake on surprises, Little Grey," he contradicted with a laugh, nodding to her stomach as he drove.

"He was as much a bombshell to me as he was to you, believe me," she said, rubbing her stomach. "When I took the first pregnancy test, I was in complete disbelief. Then I realized that it had to be true after the next couple tests I took all came up positive."

"When I realized you were pregnant, I felt excited and nervous because you and I had left things so…unfinished and you were so angry with me. I had no idea how you would react to me when I came to Boston and ambushed you."

"I'm glad you came," she admitted as they came to a stop light.

"I am too," he said, smiling over at her.

They drove for another twenty minutes before pulling into the parking lot of one of Lexie's favorite restaurants in all of Seattle. She was honestly shocked that Mark remembered this place since it had been years since they had been. Looking over at him, she beamed.

"You remembered," she said, a little amazement evident in her voice.

"As if I could forget," he grinned, getting out and coming around to open her door for her and help her out of the car.

Lexie got out and stood up, fixing her dress before giving him a quick kiss. "You remember a lot."

"Only about you, Lex," he said, leading her in before they were seated.

Literally nothing about this place had changed, which brought back fond memories for her of past dates with Mark and the time they had spent together. She looked across the table and smiled at him genuinely. He was still so handsome, which she never doubted would change. And his eyes were still so blue and comforting to her, which reminded her that she hoped their son would have his blue eyes. Genetically, it was likely that he would have brown eyes since that was the dominate trait in the Grey family, but there was always the chance the recessive could take over and give their son the Sloan eyes.

"Are you excited about the surgery tomorrow?" he asked.

She grinned happily. "Yeah…it's the kind of tumor you only see a few times in your entire career in Neurosurgery. It's like…the spinal tumor Derek removed from Isaac."

"You guys are gonna do great," he replied proudly. "Just make sure you can take breaks when you can for your back."

"I'll be fine," she told him, knowing he was going to worry regardless of what she said or didn't say at this point. "Derek will take good care of me in surgery."

"He better or I'll kick his ass," he chortled, shaking his head with a smirk.

Lexie couldn't help but smile, knowing how close Derek and Mark were and had been since they were children. Since Mark hadn't really had a family growing up, Mrs. Shepherd had raised Mark as her own son. And Derek considered him a brother, which was why they looked out for each other and occasionally beat the crap out of one another when it was warranted.

"We don't need a repeat of the ass kicking you gave each other on the cat walk when you told him we were together in my intern year," she reminded him. "You broke your hand that time and Chief Webber almost killed both of you."

"That year was the year of a lot of stuff…breaking," he chuckled, giving her a knowing look.

Lexie blushed profusely at the mention of breaking Mark's penis. It had been the one and only time they had ever had such a serious sex injury in their relationship. "Yeah…that…that was an interesting year."

Their waitress came and took their order before giving them some privacy again. When she looked at Mark, she felt their son kicking around inside of her a little more, making her smile and move her hand to her stomach. He was more active when she was sitting or laying down these days, like the movement when she walked lulled him to sleep or something like it.

"I was thinking about something and wanted to ask you what you thought," Mark suddenly said, catching her attention once more.

"Okay…what is it?" she asked curiously. Mark had a way of springing things on her when she least expected it.

"The baby's name…well his middle name, actually. I was thinking we could make it Derek," he went on, looking at her. "If you don't want to, that's fine but I-"

"Mark," she interjected, reaching over to touch his hand. "I love that idea."

Derek was Mark's family as he was her own since he was married to her sister, though things were a little rocky right now between him and Meredith. And he had already been treating her like a little sister for years, so it was only fitting that they name their son after him in some way or another.

"Yeah?" he breathed in relief.

"He is just as much your brother as he is mine, if not more, so I think it's only right that our son shares part of his name with his Uncle Derek."

Mark grinned widely and squeezed her hand. This was the most involved he had ever been with any of his children before birth, so she knew how important all of it was to him. Lexie had wanted that for him right from the start, right when she found out she was pregnant and decided to keep her baby, but circumstances made it really difficult until recently when she told him she was pregnant. But everything was starting to get better and she knew how happy he really was.

Their dinner came out about thirty minutes later and they kept on chatting while they ate. Conversation was so easy with him, as it always had been. From the beginning, right when they started sleeping together, they had been able to talk and laugh with one another, which was something very unique to any of Mark's relationships.

"Have you thought about what you want when the baby is born?" he asked, taking a drink of water as they were eating.

"Like…a birth plan?" She looked up at him and saw his nod. "Well I was definitely going to have the baby at the hospital with Dr. Anderson delivering him. I want to try to go without the epidural, if at all possible, but that'll depend on how I feel when I'm actually in labor and want to rip my uterus out."

"And who do you want in the room when you deliver?" She could hear the hesitation in his voice as he asked.

"I want you there," she replied without hesitation. "You have to hold my hand and make me push when it's time, no matter how much I cry and don't want to; Or how much I yell at you for knocking me up."

He smiled. "I'll be there, Lex."

"And you cut the cord when he's here," she added as she remembered that as well. "He's your son so you need to do those things."

"I promise I will."

Lexie knew Mark would be a great father and already was in so many ways. She had seen him with his daughter, Sofia, and knew how gentle he was. Not to mention how dedicated he already was to both his youngest children. He was already buying things for the baby, including several sets of clothes, diapers, and even a swing for him. And even though he hadn't said anything to her, he had been looking into houses because his apartment was for a single guy. Or at least just a couple. Not a guy with two kids under the age of one.

"I also decided his last name. It's going to be Sloan," she said after a moment, nodding her head indefinitely.

"Just Sloan?" Mark arched his eyebrow. "No hyphenated Grey-Sloan?"

"Nope," Lexie shook her head. "He is going to be a Sloan all the way."

"You sure you wanna do that?" he laughed. "All the Sloans tend to be trouble."

"I think I can handle it," she smirked. "Didn't I fall for you despite all the warning everyone gave me about you?"

His smile gave her all the answers she needed. Even though they weren't officially together right now, she knew that they both wanted to be there again eventually. Mark was her soul mate and love of her life, so she knew she could forgive his wrongs. And he had forgiven her for running away. Now they were taking it one step at a time and these baby steps were good for her in so many ways.

After dinner, they drove back to Derek and Meredith's house, but she invited him in this time. Going up to her room, she closed the door behind her once they were both inside. Lexie leaned up and kissed Mark, wrapping her arms around his neck as best she could, her belly pressed to his. The feel of his lips against her own was like velvet as their tongues tangled slowly, building the passion of the kiss. Mark's hands moved down her back to her hips and held her close. After a moment longer, she broke their kiss and rested her forehead against his.

"Stay tonight?" she asked in a quiet voice.

He nodded and kissed her again, tenderly this time. When she broke the kiss, she turned around and had him unzip her dress. For a moment, she hesitated in undressing in front of him because her body was so different now with pregnancy. There were already stretch marks on the sides of her stomach and down to her hips. And Mark was…well, perfect. He was Mark Sloan, literally a walking sex symbol. And while she hadn't been so bad before, her body definitely wasn't what it used to be.

"You okay, Lex?" he asked, having noticed her hesitation apparently.

"I uh…my…I'm not the same," she finally said, trying not to cry. "My body is different, Mark."

"Lex…" he murmured, kissing her neck from behind. "You are beautiful. Nothing will ever change that."

She turned to face him. "You say that now, but what about in three months when I've gained more weight and my stretch marks are worse? Or after the baby comes when I'm just fat?"

Tears were already coming down her cheeks. "You're…well you're you! You're gorgeous and perfect, but I won't even have a cute ass anymore after this pregnancy!"

"Is that the only reason you think I love you?" he asked, moving his palm to her cheek. "Lexie Grey, you are the most beautiful, captivating, kind, infuriating, and wonderful woman I've ever known. I love you because you are so much more than just a pretty face."

Mark's words brought tears to her eyes as she looked at him, seeing the man she had fallen in love with so long ago when she was just a meek little intern that didn't know where she was going in the world, other than to become a surgeon. She hadn't planned on falling in love, having a baby, or any of that before becoming an amazing surgeon that had the respect of the surgical world, but life had other plans apparently.

Without words, Lexie moved forward and took his face in her palms, kissing him passionately and without apology. He didn't hesitate to wrap his arms around her and hold her close to him, but she didn't break the kiss or let go this time. Instead, she tangled her tongue with his and wanted to feel him all over her body. Mark didn't argue either as she began to unbutton his shirt after pushing off his blazer and letting it fall on the floor. Her hands ran along the bare skin of his chest before she broke their kiss to breathe, looking in his eyes. Gently, Mark moved his hands down toward the middle of her dress, lifting it slowly before she raised her arms to help him be rid of it.

When she was more exposed, she felt self-conscious of her body since Mark hadn't seen her naked since she got pregnant, but he was quick to kiss her neck and move his hands over her curves. She pushed off his shirt and looked at his shirtless figure, feeling her heart beating fast in her chest as she bit her bottom lip. Mark kissed her again and undid her bra before sliding it off and moving her toward the bed a little. Sitting down on the end of the bed, she undid his pants and slid them off before he joined her on the bed, kissing down her neck to the top of her chest before taking one of her breasts in his mouth.

"Mark…" she gasped, unprepared for how good it would feel.

Months had gone by without sex for Lexie and she had forgotten how good even the slightest of touches from Mark could feel. He moved up and kissed her soundly, making her give a small noise of approval as his hand slid down her side to her panties, tugging them down and off before he tossed them off the bed somewhere. His boxers joined them on the floor as Mark brought Lexie over on him. Leaning down, she kissed him deeply and rocked her hips against his to tease him, knowing it was something he always liked during foreplay. He groaned into their kiss and she knew he was getting turned on by the reaction below the belt.

"Lex…" he murmured against her lips as he moved his hands over her hips. "God I missed you."

"I missed you…" she whispered, kissing along his neck while still moving her hips over his in a rocking motion.

After a few minutes of that, neither one of them could wait anymore, so Lexie raised her hips enough for Mark to reach down and guide his erection between her legs. Slowly lowering herself on him, she gasped from the feeling. She had forgotten how thick he was and how good it felt to have him inside of her over the last few months, but that feeling quickly returned to her as she was all the way down against him. Both of them let out a sigh of pleasure before she leaned in and kissed him, rocking her hips to his in a slow and sensual motion. This was a feeling she had missed the entire time she was away in Boston…the closeness of their intimacy and how connected she felt to Mark.

They kissed and shared little whispers of each other's names as they made love in her bed. Gasps escaped her throat as she felt herself approaching the edge of orgasm until she teetered over the edge, crying out his name before he followed after. She moved slowly off of him to the side, laying on her side so her belly rested against his and her head was on his shoulder.

"I love you," she murmured softly, kissing his chest once before laying down again. She was sated, happy, and sleepy now as she was drifting to sleep.

Mark pulled a blanket around both of them and held her close. "I love you too."