Author's Note: Woo hoo! I finally have internet again! I've been sitting on this first chapter for DAYS! (Plus there's a second chapter begging to be finished by the weekend!) I guess you can say that this features some minor spoilers for the upcoming episode/fall finale Death Do Us Part. This is my take on things...I have no clue what the writers are planning. Hopefully you all enjoy this...cause let's face it. I don't write fluffy stories well...and this story will feature a lot less fluff than the other Med story I'm working on. (Feel free to check out Make This Go On Forever!) As always, reviews are VERY VERY VERY much appreciated!

I'm sorry that I hurt you
It's something I must live with everyday
And all the pain I put you through
I wish that I could take it all away
And be the one who catches all your tears
That's why I need you to hear

I've found a reason for me
To change who I used to be
A reason to start over new
And the reason is you
~Hoobastank~ The Reason

" What are you doing here? Aren't you supposed to be getting married tomorrow or something?" Connor Rhodes asked as Will Halstead walked into the doctor's lounge.

" Natalie was scheduled for a half shift today. She's on the verge of having a breakdown trying to get the last minute details together for the wedding so I offered to cover for her," he explained, storing his bag in his locker and grabbing his stethoscope.

" So how about you? Are you ready?"

" I could use an Valium to go with my coffee," Will joked as he sat across from Connor.

How much longer do you have in your shift?"

" About an hour. I've been in here hiding from Lanik."

" Is he still being a dick about the hybrid OR?" asked Will, taking a sip of coffee.

" Both he and Goodwin are down my neck about it."

" Did Goodwin really threaten to fire you?"

" Who did you hear that from?" questioned Connor. Will opened up his mouth to answer, but was interrupted by Maggie entering the lounge.

" Halstead, you've got a patient coming in. Teenager on a skateboard versus a flight of stairs."

" Got it Mags."

" And pitch that coffee. Are you trying to make that ulcer bigger?"

" Ulcer?" Connor questioned.

" It's a long story. Stay close in case I need a surgical consult."

By the time Will finished with his patient, Connor was long gone. With just a few hours left in his shift, he headed back to the lounge to grab a cup of coffee since Maggie had thrown his out earlier. Just as he sat down, his phone chimed, indicating a FaceTime message. As soon as he swiped to accept it, Natalie's frantic face filled the screen.

" Nat. What's up?" he asked his frantic soon to be wife.

" The rings…" she started to say.

" I have them in the safe in my locker. I'll bring mine by here in a little bit when I get off work."

" Okay, she responded reluctantly.

" Natalie. Everything is going to be fine. Just breathe." An icon popped up on Will's phone, signaling a call coming in from Tommy Burke. He quickly declined it, hoping Natalie wouldn't notice it.

" Who was that?" she questioned.

" One of those damn solicitors," lied Will, feeling his stomach twisting in knots, the lie so easily fabricated.

" I hate those," she remarked, not noticing the change in Will's demeanor.

" I'll bring my ring by tonight before I head over to Jay's. Don't worry. Everything is going to be fine," he declared, nearly choking on bile.

I love you."

" Love you too. See you soon," Natalie said, ending the call. Will stood on shaky legs, thankfully making it to a nearby trashcan before he began to vomit. The heaving left him feeling weak and tremendously guilty. He had to come clean to Natalie ASAP. There was no way he could go through with the ceremony knowing he was keeping such a huge secret from his bride. Will instinctively hung up his stethoscope and pulled on a hoodie then grabbed both rings and placed them in his bag. He slung his bag over his shoulder as he exited the lounge.

" You look like hell. I told you that coffee was going to make your ulcer act up," Maggie said sternly.

" Let Goodwin know I left early. Hopefully I can sleep this off before tomorrow."

" You better!" the nurse ordered as Will walked out of the hospital.

By the time Will reached Natalie's brownstone he felt as if he had been run over by a bus. He mustered up the strength to knock on the door, forgoing the doorbell just incase Owen was napping. Natalie's face quickly turned to that of worry when she opened the door.

" Oh my god! Will! Are you okay? Is it your ulcer?" she asked, raising a hand to his forehead.

" Must be," he replied through gritted teeth.

" Go upstairs and lay down. I'll get your medicine." Will didn't protest, dropping his bag at the foot of the stairs before he dragged his tired body up to their bedroom. A passing glance in the mirror revealed a pale faced Will. He had kicked off his shoes and burrowed under the covers by the time Natalie made it upstairs with his medication and a glass of water.

" Should we go to the ED?" she asked, watching as Will eagerly swallowed his medicine.

" I just came from there and have no desire to go back until AFTER our honeymoon," he admitted.

" Are you sure?" Will nodded, ignoring the pain in his stomach.

" Where's Owen?"

" Helen is going to keep him tonight and get him ready tomorrow so we don't have to worry about it," she explained, climbing in bed beside him. Will took a deep breath, trying his best to push aside the anxiety and pain that were plaguing him.

" We need to talk."

" About what? We're still getting married tomorrow, aren't we?" she asked nervously.

" Nat. I need to come clean about something before I stand up in front of our friends, family, and God, taking you as my wife." The bedroom was silent as Will took several deep breaths.

You're right when you say I haven't been completely honest with you. I've been hiding something from you. Something big."

" Are you seeing somebody? Is it that 'drug rep'?"

" Dear god no. You're the only one I want to marry. I'm love with you Natalie...but I have to get this off my chest. That woman...she's an FBI agent."

" The FBI? What in the hell is going on Will?" He sighed, trying to decide how to explain the past few weeks without revealing too much. "I wish I could tell you everything right now, but I can't. Not yet. I can't risk your or Owen's safety."

" But whatever it is is worth risking your own health and safety?"

" I got myself into the middle of something seemingly innocent shortly after my dad died. I thought I was just helping out an old neighborhood friend."

" What happened?"

" Natalie you can't say a thing to anyone. At all. About any of this. Especially Jay." She nodded.

It turns out that old neighborhood friend's dad was wanted by the Feds. Had I known, I wouldn't have agreed to any of it. Nat...I fucked up. Big time. If the feds can't arrest him…"

" Slow down. We know how Voight operates. They'll get this guy," Natalie offered optimistically.

" I hope so," he said tiredly, feeling the medicine beginning to work.

Natalie, you have to understand. No matter what happens, I will always love you and Owen. You two are my world." Beside him Natalie lay silently, trying to make sense of what Will had just told her. Will watched as the pain and confusion hit her, certain that she was going to declare she wanted to call off the wedding.

" Marriage is all about being a team and trusting one another. I won't lie and say that finding out that you've been lying to me for weeks doesn't cut deep. At the same time I know and love your willingness to help others. I want to be angry with you and I'd be lying if I said some part of me isn't pissed, but I love you William Patrick Halstead."

" Enough to still marry me?" he asked, staring into her brown eyes.

" Enough to still marry you," she insisted. Will let out a sigh of relief.

" I promise when this is all said and done with, no more lies. I'll tell you everything the minute the guy is behind bars. I think Jay and everyone involved will agree I'm a god awful CI."

" Agreed," Natalie replied with a smile.

How are you feeling?"

" A million times better. Holding in all of that…having to lie to you...it was literally eating me alive. I feel like a weight has been lifted off my shoulders," Will declared with a yawn.

" Why don't you take a nap? I'll call Jay and tell him to pick you up here when his shift is over," Natalie insisted, carefully tucking the covers around Will and planting a kiss on his forehead.
" Sounds good to me," he replied, closing his eyes. By the time Natalie reached the staircase she could hear his snores fill their bedroom.