This one's a bit rushed, so I'm sorry in advance! Also, please do leave reviews I like reading what you guys think. And Patsy — thank you for all the nice words!

P.S. The title of this fic is the same title of the song that played when Lexie first said I love you to Mark in the show.

—

Mark is sitting on the couch across the room, staring at her, as he leaned closer to Callie and whispers, "What is she doing here?"

Arizona softly nudges Callie and her wife rolls her eyes, taking Sofia from his lap. "It's her sister's Christmas eve dinner, of course she's here."

Mark ignores his friend's sarcasm and glares at her. "No. I mean, in Seattle."

It was no secret that he was still hung up on Lexie, even after everything. His life completely turned around the day of his wedding. Derek told him to go after her, while Callie knocked some sense (if that's what you'd call it) into him.

Mark, let it go. Can't you see? It's a fucking cycle! With the two of you, it's a never ending cycle! It's good then it's horrible then you break up then you pine over each other for another year then it's good again then it's horrible again. It's depressing! You're happy now. Just let it go. Julia is good for you, I promise. She makes you happy. If you leave her now, I swear to god, Mark Sloan...

And when he asked Arizona:

You know, maybe Callie's right. Maybe that's why it never worked, because it's the universe telling you that it's wrong.

So he walked down that damned aisle.

—

"Yeah, okay. I uh, miss you too. Um, yeah. Bye." Lexie said and put down her phone on the grass beside her. It was Liam, the neuro attending she's been going out with. She took another drink of the beer in hand and lay down on the grass to look at the moon. The quiet and the freezing air in the backyard were better options to her compared to staying inside the house, with Mark just meters away from her.

"Mind if I join?" a raspy voice asked and she knew exactly who it was without looking. She didn't respond and instead kept her eyes on the moon.

She could feel him lie down beside her, their shoulders almost touching. He was so close she could smell his skin. She slowly turned her head to the side to look at him and study his features just as she did for the millionth time. Still the same. The six months haven't changed him much, but instead, the length of the time she spent not seeing him in the flesh, only made him more beautiful to her. She smiled a little. "So. How's, um... how are you?"

He opened his eyes at her voice and looked at her. "No need to be nervous around me, Lex." He chuckled. He knows her that well. Her little quirks, the little twitches in her face, the slight change in her tone. "It's just me." I know you inside and out.

She looked back up at the moon and smiled at that. She missed him. Scratch that, she misses him. How are they always like this? They fall apart, in the heat of the moment, then they fall back together, when they can think clearly and they realize how much they miss the other. Well, not this time.

He cleared his throat. "Julia's good, if that's what you're asking. Happily married." He watches her as she nods slowly, taking in what he just said. He interlaces his fingers with hers, and tightens them when he felt her try to pull back. "To someone else."

Lexie instantly sat up and looked at Mark. "Wait what?" The edge of her mouth twitched a little, not being able to stop herself from smiling. She cleared her throat and tried to compose herself, thinking of how rude she must be right now to be smiling over something she mustn't have heard right. "I'm — I'm sorry, what?"

He laughed. She was never one who was able to stop her emotions from showing on her face. She was very expressive, and he always loved that. He loved that when they're in bed, making love, and her face is twisting in a hundred different emotions at once. He loved that even more afterwards, when they're spent and he's whispering sweet nothings in her ear. But he loved that the most when she tells him she loves him and her eyes sparkle so brightly, it takes his breath away.

"Her ex interrupted the wedding. And she chose him. I guess it really wasn't meant to be." He looked down at their fingers. "I tried to look for you after it was all over, but I didn't really know where you went off to so I had no idea where to start... And Meredith and Derek said they didn't know where you were so..."

"I'm sorry, I don't know why I'm smiling so much. I..." she laughed and tried to cover her mouth. He laughed along with her and for a while, they were just in a perfect bubble, just the two of them, until Lexie's phone started ringing on the ground.

She removed her hand from Mark's and mutters an excuse me as she stood up and walked a few steps away before answering her phone. "Liam? Hey. Um what? Wait, the phone service is really bad here."

Someone covered her eyes and she laughed a little. "Mark, stop." The hand was suddenly removed from her eyes and she turned around to playfully push him back but instead her mouth was wide open, disbelieving.

It wasn't Mark, but instead someone from her new life, smiling at her widely, despite looking so confused. "Who's Mark? It's Liam."

Lexie smiled, surprised, and hugged him. She was glad he was here... kind of... she thinks. Liam has always been into her more than she was into him, and it was evident ever since the first night they found themselves in the on-call room, and he brought her flowers the next day, thinking the sex made them a thing.

"See? What did I tell you?" Callie said as she walked up to her best friend, who was watching the little scene in front of him. "It's a fucking cycle."

Mark sighed sadly as he grabbed Callie's beer and downed the half-full contents in one swig.