Bucky and Sam are sleeping peacefully in their bed when the Winter Soldier was suddenly plagued by nightmares. He squirmed and whimpered fearfully in his sleep, waking up his boyfriend.

"Bucky? Buck, baby, are you okay?" Sam asked sitting up in bed.

Still asleep, Bucky cries out and curls into a ball. Worried, Sam reaches out to nudge Bucky awake. The second he touches his shoulder, Bucky swings his metal arm back and whacks Sam right in the face. The blow knocks Sam off of the bed, causing him to hit his head hard on the floor.

"ОТПУСТИ МЕНЯ!" Bucky shouted bolting upright in bed.

He's panting and shaking, covered in sweat, looking around the room for Sam.

"Sam? Sam, where are you?" Bucky said, voice trembling.

Then Bucky notices a small amount of blood on the back of his metal hand, and his blood runs cold. He looks over the edge of Sam's side of the bed and sees his boyfriend sprawled on the floor unconscious.

"SAMMY!" Bucky gaped rushing out of bed and to Sam's side.

Bucky was completely freaking out, he knew that the black eye and on Sam's face was his fault. Sam also had a small cut under his black eye that bled slightly. But the most concerning injury was the blood coming out the back of his head from where he hit it on the floor.

"Oh god, oh god, oh god. What did I do, what did I do, what did I do?" Bucky whimpered cradling Sam's head in his hands.

The drive to the emergency room felt like an eternity. Bucky didn't know what to do with himself while Sam was being treated by the doctor, he paced all over the waiting room.

"I can't believe I did this. I hurt him. I hurt the one I love, I'm such a terrible boyfriend." Bucky mumbled to himself crying into his hands.

A nurse comes out and tells Bucky that Sam was doing good and was awake. She told him that Sam had a mild concussion with two stitches on the back of his head. When he entered the room, Sam smiles at him and waves him over. Bucky practically collapses into Sam's embrace, burying his face into his chest, crying.

"I'm sorry, Sammy, I'm so sorry. I didn't mean to hit you, I swear." Bucky cried.

"Bucky, babe, it's okay. I know it was an accident." Sam said rubbing Bucky's back.

"Hello, Mr. Wilson, how are you feeling?" the doctor asked coming into the room.

"Good. A bit sore, though." Sam replied.

"Mr. Barnes, can you step out for a moment, we'd like to ask Mr. Wilson a couple questions." the doctor told Bucky.

"Umm...okay." Bucky said.

He kisses the top of Sam's head then steps out of the room. 

"Okay, Mr. Wilson, can you tell us how the injuries happened?" the doctor questioned.

"Well, my boyfriend was having a PTSD nightmare, so I tried to wake him up. He reflexively swung his arm back, accidentally hitting me in the face and knocking me off the bed where I hit my head on the floor. And that's the last thing I remember." Sam explained.

"You know...Mr. Wilson...if it wasn't an accident, you can tell us." the doctor said placing her hand on Sam's shoulder.

"Are...are you implying that this is a domestic violence situation? Are you serious!?" Sam asked getting slightly upset.

"Sir, with these type of injuries, we have to ask these kind of questions, it's procedure." the doctor replied.

"In that case, I guess that's understandable, but I can assure you that my boyfriend would never, in a million years, hurt me intentionally and of his own free will; this was all an accident. H*ll, he's probably riddled with guilt, I'm actually worried about his mental state right now, can you get him back in here." Sam told the doctor.

The doctor nods then opens the door and lets Bucky back into the room.

"What were you guys talking about?" Bucky asked sitting beside Sam's bed and holding his hand.

"Just some routine questions, nothing to worry about." Sam said lacing his fingers with Bucky's.

The next day, Sam is at home resting on the couch while does everything for him. Sam's been a little worried about his boyfriend, he hadn't spoken much since they left the hospital.

"Bucky, hun, come here." Sam called out.

"Yeah, Sammy? Do you need anything?" Bucky asked coming out of the kitchen where he was making lunch.

"Just come here, baby." Sam said patting the spot on the couch next to him.

"How's your head?" Bucky asked.

"Buck, you've asked me that question a thousand times, and each time what do I answer?" Sam said cupping Bucky's face.

Sighing, Bucky leans into Sam's touch and kisses his palm.

"That you're okay." Bucky mumbled.

"Aaaand?..." Sam said pressing their foreheads together.

"And that it wasn't my fault and that it was an accident." Buck mumbled, avoiding eye contact with Sam.

And before Bucky could apologize for the millionth time, Sam pulls him in for a kiss. Bucky kisses back, gently caressing Sam's head, careful to avoid the stitches. It took a few more days after that for Bucky to forgive himself for hitting Sam. This incident caused the super soldier to make the decision to take off his metal arm before going to bed so that there wouldn't be a repeat of what happened.