Requested by mcuobsessedstorys: Y/N and Peter are dating, and they fight just before Y/N goes on a mission. Y/N dies on the mission and so Peter blames himself for not protecting her and for the fact that he didn't get to say goodbye.

"Peter, fucking get off of my back." I scoffed, my boyfriend following on my heels like a lost puppy as I rushed around the weapons' room to grab what I needed for the mission.

"No, babe, I won't get off of your back until you agree to not go on the mission." He spat.

"I'm going, Peter, I don't give a shit what you think about it." I snapped back, desperately trying to ignore him as I loaded what I needed into my weapons belt.

"Well, you should give a shit! I'm your boyfriend, I'm only trying to protect you from what's an extremely dangerous mission-."

"No, Peter, you're trying to hold me back from my biggest mission on the team so far." I nodded as I finally turned around to face him. He scoffed and his eyes wavered.

"You really believe that?" He mumbled.

"Yeah, I do. I'm going on the mission with Nat and Steve, it's nothing out of the ordinary and I'm with two of the best fighters on the team. I. Will. Be. Fine." I spoke through gritted teeth, making Peter clench his jaw at me. I had joined the Avengers only a year ago, making me the youngest and least experienced member of the team at just twenty years old. Tony had introduced me to Peter first, the twenty-one-year-old boy being slightly older than me but also the closest to me personality-wise, and so Tony had figured that we'd clicked. He was right. After only a month of friendship, Peter had asked me out, and we'd been happily together ever since. I loved Peter with my entire being, the only flaw that he had being that he was protective of me, sometimes too much so. Whilst I loved his protective streak in situations where I was being unwillingly flirted with in a bar, or even when we were watching a scary movie, today, he had taken it too far when he had tried to get me taken off of a mission out of fear that it was too dangerous. And so, we were currently in the middle of our first fight, virtually screaming at each other because he was insisting that it was too dangerous, and I was insisting that it would be fine.

"Yeah, I'm sure that you will be fine, especially without your boyfriend who's only trying to protect you!" He shouted.

"Fuck you, Peter, I don't need protecting! I'm not some scared little girl who's going to stroke your ego by begging to crawl into your arms!" I yelled back.

"I never said that! Y/N, you could die on this mission-."

"But I won't do, because I'm an Avenger who can fucking handle myself." I spat. Peter scoffed and shook his head, tears now leaving his eyes as he looked at me.

"You know what? Whatever. If you won't listen to me trying to protect you, fuck you. Have a good mission." He scoffed and shook his head before turning and storming out of the weapons' room. I gulped and looked down, a tear leaving my eye as I did. I sniffed and tried not to cry more, my heart racing as I only just realised everything that we'd just said to each other. Not that any of it could be taken back now. I choked and shook my head as I wiped my tears and started to leave the weapons' room. I didn't have time right now to get distracted by everything that had just been said, so we could resolve it after I got back. I sighed and shook my head, ridding myself of the thoughts as I headed out to the jetti-pad and got onto the aircraft.

"Guys, I need help here, I'm surrounded!" I yelled into comms, my flattened palms firing red energy at guards as I desperately tried to fight them all off.

"Hold on, kid, we'll be with you in thirty seconds!" Steve replied.

"I don't have thirty seconds!" I shouted back, tears pricking my eyes as I was growing increasingly outnumbered and tired. I hated to admit that Peter had been right to call this mission too dangerous for me. The mission was simple enough, to infiltrate a HYDRA base outside of New York. But as soon as we had gotten off of the jetti, we were fucked. We had been given false Intel, meaning that we were surrounded the second that we got off. I had been separated within seconds from Natasha and Steve, and so was currently trying to fend off a dozen guards so that they could get to me alive. Though, I was currently losing.

"Y/N, hold on! Fend them off for ten more seconds, you've got this!" Natasha encouraged. I took a deep breath, my energy building up inside of me as I could only think of one way to survive the onslaught of guards. I yelled out before driving my hands down against the floor. The power sent a shockwave cascading through them, making them all groan and fall down as I knocked them unconscious. I puffed out, my body now extremely tired from the use of the energy as I stood up again.

"Alright, guys, I'm okay here-." I looked up, my eyes widening as another guard appeared at the door.

"NO!" He raised his gun and fired, making me choke as immediately, pain coursed through me. The guard groaned as Natasha appeared behind him and knocked him out, her eyes landing on me. Her gaze widened.

"Oh my god." She mumbled as I looked down to see crimson blood blooming from the bullet hole that now sat in my chest. I choked and looked back up at her.

"No, honey, no." She shook her head as she rushed to me. My legs gave way, Natasha's arms quickly catching me as she sunk to the floor with me lying on her lap.

"No, don't do this to me, you're not going to die on me, you need to fight this, Y/N." She shook her head, tears pricking my eyes and quiet chokes leaving my lips at the pain as she desperately pressed her hand to the wound. But it didn't help, blood just seeped through her fingers as she put pressure on it. I knew what that meant. I was dying.

"P-Peter and I-I, we f-fought before I left. H-he tried to stop me from going, w-we fought." I choked as blood started to pool in my mouth and the pain started to disappear.

"It's okay, Y/N, try not to speak, you've got to preserve your strength, it's going to be okay." She nodded, but the tears leaving her eyes told me that even she didn't believe that.

"You've g-got to tell him that I didn't mean it. I-I didn't mean what I said. I didn't m-mean any of it, please." I shook my head.

"It's okay, because you're going to tell him yourself, you're going to make it out alive, do you hear me?" She choked as she continued to try and stop the bleeding. I shook my head and gave her a small smile.

"I'm not. I-I'm dying, and that's okay. B-but I need you to tell Peter that I'm sorry. A-and that I love him. God, I love him s-so much that it hurts." I cried, tears leaving my eyes as the magnitude of what was happening finally hit me. I was dying. I was dying, right after I had fought with Peter. It would have been bad enough if I just hadn't gotten the chance to say goodbye, but we'd fought before I'd left. I hadn't told him that I loved him like I usually did, I hadn't kissed and hugged him. His last memory of us would be us fighting, and I couldn't change that. I'd never see him again, I would never get to say goodbye to him. And that was breaking my heart.

"You've got to t-tell him that I-I love him, Nat, please, p-promise me." I choked.

"I promise, honey, I promise. I'll tell him that you're sorry, and that you love him, I swear to god, he'll know." She promised as her tears dropped onto my skin. I gulped and looked up at her.

"It doesn't hurt, Nat. It doesn't hurt. It's okay. T-tell him that too. That I was okay." I whispered, my body becoming increasingly weaker as blood continued to pump out of the bullet hole.

"I'll tell him, honey, I promise. It's okay. You can let go. It's okay for you to let go, honey, I'm here, and it's okay." She nodded as she took my hand tightly into hers. I choked and nodded too, the kind woman smiling down at me to reassure me as best as she could as we both cried. My eyes started to flutter, my vision starting to blur and become patchy. This was it. The moment that everyone was taught to fear their entire lives, was finally here for me. I wasn't ready, but I had no other choice. My eyes fluttered shut, my lips parting and letting a final breath go as my hand dropped to my side, and everything faded to black.

Peter's P.O.V

Peter sat on the sofa in the living room, his jaw clenched, and his eyes glued to the jetti-pad as he waited for Y/N, Natasha, and Steve to come back from the mission. He had been sitting there since they'd left, and all he could think about was apologising to Y/N the second that she got off of the aircraft. Because he had been wrong to try and stop her. Sure, he loved her, but she was right that she needed to go on missions that were a little more dangerous and that he had no right to stop her. He should have supported her, and he realised that now. His eyes widened, his heart jumping as he saw the jetti touch down.

"Finally." He scoffed, the boy standing up as Clint and Tony rushed into the room.

"Peter, stop, don't go out there." Tony gulped as he put a hand on Peter's shoulder and stopped the boy in his tracks. His eyebrows furrowed.

"What? Why not, they're back, and I need to see Y/N." He scoffed.

"Peter, something happened on the mission." Tony admitted. Peter's face dropped, his heart starting to thump as he looked at his mentor.

"What? What do you mean, something happened? Is Y/N okay?" He gulped as his gaze moved to the jetti. His eyes widened, a choke leaving his lips as he saw Steve carrying Y/N off of the jetti. Except for that his girlfriend's body was limp, and covered in blood. Peter's eyes wavered, his heart plummeting to his feet as he got the worst fucking feeling in the world that he knew what had happened.

"No...no, Mr. Stark, no, tell me that she's okay." Peter choked and shook his head, tears immediately starting to leave his eyes as his body started to become numb.

"Peter, I'm so sorry, kid, I'm so sorry." Tony shook his head, his hands on the boy's shoulders to hold him back as Steve carried Y/N's body into the Tower.

"Let me see her, please, I need to see her, she has to be okay." Peter choked as he tried to get past Tony, but the man held him in place.

"Peter, she died on scene, I'm so sorry. You can see her in a bit, but right now, you need to sit down." Tony nodded.

"No, I need to see her, please, Tony, she can't be gone, we fought before she left, please, she can't be gone, she can't be!" Peter exclaimed, tears streaming down his face as he desperately tried to get past Tony, but the man didn't move in holding Peter.

"I'm sorry, kid, I'm so sorry." Tony choked.

"NO! PLEASE! SHE ISN'T DEAD, PLEASE, PLEASE!" Peter yelled at the top of his lungs, his eyes squeezing shut and his legs giving way as Tony held the boy in his arms.

"I'm so sorry, Peter, I'm so sorry." Tony choked as he sunk to the floor with Peter in his arms. The boy sobbed into Tony's shirt, his hands balling into fists around the material as Tony's hand gently held his head against his chest. Peter's entire body felt numb, he couldn't feel anything but pure pain. The last conversation that they'd had was a fight, where Peter had said some pretty horrible things that he regretted immensely, and now, he'd never get to apologise for. His heart felt hollow, silent sobs leaving his lips as he just cried in Tony's arms. Because this was all his fault. He had failed to protect her, he hadn't done what he was supposed to do. He had let her down, he hadn't protected her and then hadn't supported her when she had decided to go anyway. And then there was the heartwrenching fact that he'd never get to say goodbye. Their last conversation had been one filled with hatred and spite instead of love and comfort like they normally were, and then his chance to say goodbye to her had been snatched away from him too. He hated himself in the moment, and he didn't know if that would ever change.

"Peter." He choked and looked up, Natasha standing there with also wet eyes as she said his name. She gulped and crouched down beside him before gently putting her hand on his arm.

"I am so sorry, Peter. I am so sorry, and I know that you're hurting so much, but Y/N wanted you to know that she was sorry. She was sorry for the fight, she regretted what she said, and she was sorry. But she also wanted you to know that she loved you, so much. She loved you with all of her heart, and she was okay in the end. She was okay, she wasn't in pain. She wasn't in pain, and she died wanting you to know how much she loved you." She choked. Peter's mouth hung open at her words, his heart being torn apart with sorrow as he took in what the love of his life's final words had been. That she felt equally as sorry for the fight that he did, and that she loved him too. She fucking loved him. At least he could find some comfort in knowing that she didn't die in pain, but that wasn't nearly enough to dull the sadness of her being gone forever.

"What am I going to do without her? How the fuck do I live without her?" He sobbed and shook his head, tears leaving Tony and Natasha's eyes too as Tony continued to hold him in his arms and Natasha's hand stayed on Peter's arm.

"I don't know yet, kid. But I'm so sorry. I'm so fucking sorry." Tony choked. Peter shook his head and continued to cry, his heart completely shattered at the fact that she was gone. Y/N, the love of his life was gone, and there was nothing that he could do to bring her back. No matter how much he wanted to.