I have been toying with the idea of this story for a while. So let me know what you think.

Dear Rex,

Finally some peace and quiet. I know it's been forever since I wrote but being a surgical resident is a lot tougher than St. Elsewhere ever led us to believe. The last few months have been this rollercoaster of emotions that I'm not sure I'm ready to face.

First the good emotions; the ones I am ready for. Happiness for others: Enclosed please find some pictures of my new niece. Her name is Zola and she's beautiful. Tell Shane that Meredith would love a drawing of her if he's so inclined and that Dr. Altman really loved the one he did of the picture of her and Henry at the baseball game. I think it's something she's going to be glad she has down the line when the pain lessens.

Speaking of Shane and his drawings of the people in my life, Cristina loved the Super Surgeon one. Though she wants him to know that she's not really a bang person.

Arizona loves the drawings I donated to the walls of the PICU. She wants to know if she can hire Shane on his summer break to do a mural for the activity room. I know Roxie wants you guys to visit her this summer and I would love to see you, so hint, hint, nudge, nudge, maybe you could visit and let Shane work his magic?

Speaking of work, well, maybe we shouldn't speak of work. Don't get me wrong, I love being a doctor and having a positive effect on my patients. It's working with three ex-boyfriends that get to me. No, that's not true. Alex and Jackson aren't that bad to work with, especially now that they've moved out. They moved out and I'm still living in my sister's attic. (Insert eye roll here) Anyway, it's Mark of course. This leads to the bad emotions; the ones I'm not really ready for.

What is wrong with me? We were together for a year and then we broke up for a year, during which time I slept with Alex and he slept with Addison, Callie, Teddy, and Reed. Did I mention he slept with Reed while he was sleeping with Teddy? I think I heard something about a threesome suggestion in there somewhere. Then right before he and I get back together he and Callie, who was fresh off her own break-up with Arizona, slept together again and she got pregnant. I swear she is the worst lesbian ever. Then I left him again and Jackson and I started seeing each other. Jackson ended it when I accidentally-okay it was on purpose. I hit Mark's new girlfriend in the chest with a baseball. I was jealous. I am jealous.

Then came the drunken escapade. Or maybe it was an episode. Anyway, I slept with Mark. It was stupid. He was drunk and depressed and I was drunk and I missed him. I left before he woke up because when I woke up it was to the sound of Julia's voice on his machine telling him she wanted to work things out.

And they did. He's proposing to her. I saw him show Owen the ring right after I got my pregnancy test results. I'm having a baby, Rex. Isn't that great?

Okay, Gigi. I know you're standing there, looking over his shoulder. Do not let him buy a plane ticket. Do not let him commandeer the BE jet. I do not want to have to bail him out of jail and explain to my bosses why they are short one plastic surgeon. I also do want to explain to Roxie and Natalie why they can't hit Mark, even though Rex got to. Gigi, hide the credit cards. Hide his passport.

"Lexie?"

Lexie Grey looked up from the pad of paper she was scribbling and saw her brother-in-law looking down at her. For a moment she'd forgotten she was on the bridge that overlooked the front of Seattle Grace.

"Hi Derek," she smiled. "Is everything okay?"

"Yeah," Derek nodded as he sat down next to her. "I'm just wondering what you're doing. I had to call your name a couple of times."

"Oh. Sorry," Lexie blushed. "I was writing a letter."

"Anyone I know?"

"Rex."

"The cousin in London," Derek nodded. "You don't email?"

"We could but this is just something we've always done. I like it because it kind of makes sense to me because of his profession."

"I don't think you ever told me what he does for a living."

"He's a P.I. It conjures up all of these black and white images, you know? A trench coat and a fedora."

"A dusty office with the shadows of vertical blinds on the floor," Derek nodded.

"And a cheesy voice over saying something like 'She blew into my office like a cold breeze on a hot day'," Lexie giggled.

"Nice."

"Noir marathon on AMC last weekend," Lexie nodded.

"Any word from Mark?"

"No," Lexie shook her head.

"I can talk to him," Derek offered.

"No," Lexie shook her head. "I gave him his choices and he's chosen. He apparently does not want a child with me. I didn't ask him to marry me, but I did ask him if he wanted to have a place in this baby's life. He has chosen silence as his answer. So, I'm done."

"What does that mean?"

"Owen signed my transfer papers this morning. I'm on my way to Pennsylvania on Friday."

"Philadelphia?"

"Llanview," Lexie corrected. "Aunt Roxie's there and Llanview Memorial is a great facility."

"Have you told anyone else?"

"I'm telling Meredith when she drops me off at the gate on Friday. Don't worry, I won't tell her you knew already," Lexie promised.

"I appreciate that, but I wish you weren't going."

"I'll be okay," Lexie nodded. "I have a surgery in about an hour and I wanted to finish this before then."

"I'll see you at home," Derek nodded as he got up.

Rex, you've always had my back, but there's no need this time, because by the time you read this, I'll probably be on my way to Llanview or possibly there already. I gave Mark his choices in a letter of his own. Apparently he has the child he wants with Sophia and he'll have the family he wants when he marries Julia. It's for the best, believe me.

I hope to see you soon.

I love you.

I miss you.

Lexie