Dean's Pov:

It's been four years...
Four painful....agonizing heart-wrenching years.
She was gone and there was not a damn thing I could do about it.
I knew I shouldn't have kept that promise.

Flashback:

(Y/n) and I was cuddling on our bed.
Talking about a recent case we solved.
I saved her before I did the victim and the victim almost didn't live. Needless to say (y/n) was nowhere near happy with my decision. She didn't fuss at me about it. She was just not happy with my choice I could tell.

"Dean?" she asked.

"Yes princess?"

"Promise me something..."

"Anything for you."

"Promise me in a pick one situation you will save the victim before going after me."

I felt a lump in my throat. "I can make any promise but that one."

"Dean that teenage girl has a life ahead of her and she almost lost it all because you chose to save me first I wouldn't know how to feel if she died because of me I'm a distraction to you a weakness. You have to save other people. You can't keep sacrificing people just to save me...so promise me you will always put the victim first."

I tried to keep positive and think.
'Shes strong she can protect herself.'

"I promise."

She smiled. "Good." she kissed me sweetly and we continued cuddling.

And because of that, she's dead...
Because of me...

Flashback:
(Y/n) was kidnapped by a pack of werewolves. We tracked them down.

"Dean slow down you're gonna get us killed before we get there!" Sam said.

"I'm taking that risk for (y/n)!"

"We'll get there in time dean we always do!"

Soon we arrive at the location where (y/n) and another hostage are being kept.

We sneak inside and split up to cover more ground.I see a girl tied to a chair I walked towards her not without checking to see the coast was clear first of course. Then tried to wake her up and untie her.

"Hey get up,"I whisper to her. She shakes her head and lifts her head up.

"I'm here to help have you seen someone else get kidnapped?"

She nodded and pointed across from us.
I see (y/n) unconscious on the other side of the room I run to her and untie her quickly.

"Hey! Hey! Hey! Wake up for me baby girl." I say to her. She lifts her face up to me. She was more battered and bruised than the other girl.

She tries to stand up but she falls to the ground. I pick her up and carry her.

"We're gonna get out of here," I say kissing her forehead.

I can't find sam anywhere.
I need to find him so we can get out of here.

Soon I realize we went into a full on circle only to be faced with the pack holding a gun to Sam's head.

"I'm afraid you got something that belongs to us. Put the girls down and we'll let your brother go,"

"Go to hell,"

"You first Winchester," he shot back.

"Been there,"

I felt (y/n) grab my gun off my waist and she shot the guy holding Sam at gunpoint.

"Dean keep your promise."

I nodded. "I'll be back I promise,"

Sam fought off the other werewolves while I took the girl outside and put her in the Impala and rush back inside to see the alpha holding the gun against (y/n)'s head.

"I'll be fair shes rightfully yours huh? give me my girl and i'll give you yours. You dont...you can kiss your little lover goodbye," he said menacingly.

"Dean keep your promise! Don't do it!!" (y/n) yelled weakly.

"And quite the fighter she is! She stays fighting! Shes very feisty I like that. Might just keep you" he whispered in her ear.

I growled." she's mine stay the hell away from her!!"

"Oh, I can tell Winchester shes got your stench all over her but I can easily change that. Tick tock Winchester. I'll give you 3 seconds"

"Dean no!" she yelled

"1....2..."

I ran to the car and brung the girl.

"Dean why?" she croaked.

"I'm sorry I love you."

"Good choice Winchester" right when we were about to trade off he shot her in the back.

Sam shot him down.

"(Y/n)!!!"I yelled she fell to the ground.
I ran to her side and picked her up and we rushed her into the Impala.

"Dean, I'm proud of you and I love you," she said weakly.

"Don't talk like that we're all gonna make it out of here alive!" I tell her. I was trying to fight the tears but I couldn't.

"Drive faster sam!!" I yelled.

"I'm driving as fast as I can!!" he yelled back.

"Dean."

"Yea baby."

"Kiss me,"  she said weakly smiling I smiled back as tears streamed down my face. I fulfilled her request and placed a gentle kiss on her lips. When I pulled away she smiled at me and a tear went down her cheek.
She caressed my cheek with her shakey fragile hands.
"I love you," she whispered.

"I love you too."

She slipped away into the light.

"No, Don't leave me! Please don't!!!" I cried.

She's gone and its all my fault.

I hear a knock on my door.

I opened it.

"Dean." I hear a sweet voice ring a bell of familiarity in my ear I look up.

"(Y-y/n)?"

She smiles. "It's me," she said

"You can't be real."

"Moose!!" she yelled.

I hear sam sigh. "I guess I have to get used to that again huh?" Sam said.

"Tell me something only (y/n) would know."

"You kept your promise dean, you're a hero."

"What promise?"

"No more saving me first the victim gets out first always."

"It really is you." I pulled her in for the tightest hug I've ever could've given her. "I'm not gonna let that happen again I promise." I feel the tears flowing again.

She hugged me back.

"I've missed you, Dean."

"I've missed you too princess. I'm not letting you go easily this time."

I give an emotionally loaded kiss.

"I can't keep that promise anymore." 

She sighed. Deep down I knew she hated it but she knew she couldn't blame me for it. She simply smiled before she kissed me and said. 

"I'm not expecting you too."

Soon we were cuddling like the good Ol days I refused to let go. I held her tight then I remember something.

We just got back from her funeral burn the body.
I sat on my bed fiddling with the velvet box with a ring in it.

"If I could have her back again even just for a day I'd ask her to marry me. We'd get one of those on the go weddings and be on our honeymoon before sundown." I mutter to myself crying.

I kiss her and pull out the box.

"Dean," she said.

"I'm not good with words and you know that. But when it comes to you I could go on and on about you princess will you become my queen?"

She rolled over on top of me and kisses me passionately.

"Yes!"

I slid the ring on her finger.

This is a promise I can keep.

To love her forever...