Requested by MyMischeifisManaged: Y/N comes home angry because her boyfriend cheated on her, so she had to break up with him. She tells Tony, her dad, and Peter overhears them talking. He also gets angry that someone did that to Y/N, and she finds him cute when he's angry.

"Fucking asshole, piece of shit." I spat, tears pricking my eyes and anger coursing through me as I rushed to the front door of the compound. I threw it open and rushed in.

"FRIDAY, where's dad?" I asked.

"He's in the weapons' room." She responded. I nodded to myself and raised my hand to wipe away the tears that had escaped as I rushed downstairs into my dad's weapons' room. He looked up at me as I ran in.

"Hey, kid-." His eyes widened as he saw my state.

"Woah, woah, what happened?!" He scoffed as he stood up, his eyebrows furrowing in concern as he looked at me. I choked and shook my head, making him sigh.

"Come here, sweetie, it's okay." He nodded, making me bite my lip and try not to cry even more as he held his arms open. I walked into them and tightly hugged him, my dad's hand gently combing through my hair as he just held me.

"Talk to me, honey, what happened?" He asked as he pulled away and looked at me. I sighed and sat down on the stool, dad's eyes staying on me as he sat back down on his seat too.

"He cheated, dad." I mumbled as I looked down at my fingers. Dad's eyebrows furrowed.

"What do you mean, he cheated-."

"I mean that I went to the mall to meet him, like we arranged to do. But he obviously forgot, because he was there with another girl. Kissing her." I nodded as I looked back up at him. His eyes widened and he started to stand from his stool.

"FRIDAY, get my suit ready-."

"Dad, for fucks' sake, no." I groaned and shook my head.

"Look, kid, he hurt my baby girl, that doesn't go unpunished in this house-."

"Dad, I love you, but please just be my dad for five minutes instead of being Tony Stark. I need my dad right now." I nodded, my eyes wavering as another tear left them. Dad sighed and nodded, his lips giving me a small and sorry smile as he sat back down fully.

"You okay, kid? I know that you really liked him." He mumbled. I scoffed and shook my head as I looked back down at my hands.

"I'm just angry, dad. I'm not even upset, these aren't tears of sadness, I'm just so fucking pissed off. So fucking angry that he thought that I'd done anything to deserve what he did to me." I spat and shook my head.

"You have every right to feel that, honey, I'd be angry too if I found out that your mom, or Pepper had cheated on me. I know that there's nothing that I can say right now to make this okay." He nodded as he leant forward and rested his hand on my knee. I chuckled and nodded, my eyes glued to my hands as tears continued to roll down my face. I wasn't lying to my dad, anger was the main emotion that was coursing through me right now, as opposed to sadness. But there was an air of sadness in it, I had to admit, but not because of my asshole ex. Because of what I'd lost being with him. Because whilst we'd only been together for six or seven months, that was time that I could have been with someone who would treat me right. Someone like my best friend, Peter. Being the daughter of Tony Stark, I had seen a lot of Peter since he'd become an Avenger, three years ago now. Quickly the pair of us had become really close, though I had of course always felt more for the boy than just friendship. Not that I ever thought that he'd reciprocate that, but a girl could dream. So, that was where the sadness came. The fact that whilst I wasted half a year of my life with an asshole who thought so little of me that he cheated, I could have tried things with Peter, a boy who I knew loved and valued me unconditionally. Even as just a friend.

"You're right, dad, but I appreciate you trying, I do. Thanks." I nodded and gave him a forced smile as I looked back up at him.

"Any time, kid. But the offer to get the suit out is still on the table." He smiled, making me return it and playfully roll my eyes.

"Good to know, dad." I teased, making him chuckle and gently cup my cheek with his hand.

Peter's P.O.V

Peter's fingers tapped out against his phone screen, the digits typing out a text to Ned as he wandered through the compound. He looked up, his eyes widening slightly and his heart fluttering as he saw Y/N, his best friend and secret crush, rushing downstairs into the weapons' room. He smiled and bit his lip as he went after her, his mind figuring that he should say hi to the girl who he was head-over-heels for as he headed down after her, though still out of sight from her.

"Hey, kid-woah, woah, what happened?!" He heard Tony scoff, making Peter's eyebrows furrow. He popped his head around the door, his eyes widening as he saw Tony's face drop at the sight of Y/N. Something was wrong, Peter just didn't know what it was.

"Come here, sweetie, it's okay." He nodded, making Y/N choke and walk into her dad's arms. Peter's eyes widened.

"Fuck." He whispered as he took a step back so that he wouldn't be seen by either of them, but could still hear what was being said. He knew that it was kind of wrong to be eavesdropping on what was clearly a private moment, but Y/N was Peter's best friend, and he wanted to be there for her when she needed it.

"Talk to me, honey, what happened?" Tony asked. Y/N sighed in response, making Peter gulp and his heart fill with anxiety of what she might say.

"He cheated, dad." Y/N mumbled. Peter's eyes widened.

"What do you mean, he cheated-."

"I mean that I went to the mall to meet him, like we arranged to do. But he obviously forgot, because he was there with another girl. Kissing her." Y/N carried on. Peter's mouth fell open, a quiet scoff leaving his lips as he struggled to believe what he was hearing. Struggled to believe that anyone would cheat on someone as perfect as Y/N. It made him angry to think about, his jaw clenching within seconds as he desperately tried to not run into the room and make his presence known.

"FRIDAY, get my suit ready-."

"Dad, for fucks' sake, no." Y/N groaned.

"Look, kid, he hurt my baby girl, that doesn't go unpunished in this house-."

"Dad, I love you, but please just be my dad for five minutes instead of being Tony Stark. I need my dad right now." Y/N responded. Peter sighed, sadness starting to also mix with the anger at how sad and defeated the love of his life sounded at the situation. It broke his heart that someone had done this to her, especially as he would rather die than hurt her like this. But that was also where the anger came in too. The fact that her asshole ex-boyfriend had thought so lowly and bad of her that he had justified cheating to himself. It was beyond fucked up, and it was making Peter angrier by the second.

"You okay, kid? I know that you really liked him." He mumbled. Peter's eyes wavered, and he tried not to let his heart drop at Tony's words. He knew that this was about Y/N, that she was the one hurting, but he had to admit that it felt like a stab in the chest to hear that she really liked someone else, not him. Though, he wasn't sure if she'd ever see him like that. He heard Y/N quietly scoff.

"I'm just angry, dad. I'm not even upset, these aren't tears of sadness, I'm just so fucking pissed off. So fucking angry that he thought that I'd done anything to deserve what he did to me." She spat.

"You have every right to feel that, honey, I'd be angry too if I found out that your mom, or Pepper had cheated on me. I know that there's nothing that I can say right now to make this okay." Tony responded. Peter sighed, his heart breaking even further purely with the knowledge that his best friend was hurting so much. Especially because he knew that he'd never hurt her like that. The truth was that Peter had been head over heels for his mentor's daughter since they first met, three years ago. They had become close within days, but of course Peter had always seen the beautiful and kind girl as so much more. He doubted that she'd ever reciprocate that, but a boy could dream.

"You're right, dad, but I appreciate you trying, I do. Thanks." Y/N spoke, making Peter snap out of his own thoughts.

"Any time, kid. But the offer to get the suit out is still on the table." Tony returned.

"Good to know, dad." Y/N teased, making Tony chuckle. Peter sighed and clenched his jaw, deciding that once Y/N was in her room, he'd go up and talk to her about it. After all, he had to be there for his best friend. And so that was exactly what he'd do.

Y/N's P.O.V

I lay on my side in bed, my eyes glued to my phone as I went through my camera roll and deleted all photos that I had with my now ex-boyfriend. I clenched my jaw and tried not to cry, anger still coursing through me at the fact that he had betrayed me like that. The fucking arrogance that made him think that he'd be able to get away with it. All of it only made me angrier the more that I thought about it. I looked up as I heard a knock on my door.

"Come in." I spoke. The door opened, making my eyes widen slightly and my heart jump in my chest as Peter rushed in and shut the door behind him.

"Is it true?" He scoffed. My eyebrows furrowed.

"Is what true-."

"Is it true that that asshole son of a bitch cheated on you?" He spat. My eyes widened slightly at his tone filled with anger, but I knew that the anger wasn't directed at me. I sighed and bit my lip as I nodded, making Peter scoff and shake his head as he started to pace the floor in front of my bed.

"Un-fucking-believable, what a fucking asshole! He gets a girl like you and he throws it away for what?! To have a fucking side piece?! What the fuck is wrong with him?!" He snapped, but again I knew that the anger wasn't for me. And I couldn't lie, I was actually finding how angry this made him kind of cute. It showed that he cared about me, it showed that he was made absolutely furious by the idea of someone hurting me like my ex had. And I had to admit that I appreciated it. I had to admit that Peter was cute when angry.

"I know, Pete, trust me, I'm just as angry. But it's done now, I ended things." I mumbled.

"I know that you did, and that's really big of you to do, but fuck me, what a dickhead. Imagine throwing away half a year, imagine throwing away you for a girl who probably will never be even a quarter of the girl that you are. Could never fucking be me. If you were mine, I'd hold onto you until the day that I died." He shook his head as he continued to pace. My eyes widened, my heart violently jumping in my chest at his words. If I were his, he'd hold onto me until the day that he died? Implying that he wanted me to be his? The thought made my cheeks blush harshly, and butterflies of excitement and love flutter around my stomach.

"Peter, what...what do you mean by that? That if I were yours, you'd hold onto me until the day that you died?" I gulped, my head needing concrete clarification before I did anything stupid. Peter sighed and looked at me.

"I shouldn't have said that, I'm sorry. But-fuck, I mean that if I ever got lucky enough to be with you, I'd never let you go. I'd worship the ground that you walk on, more so than I already do now. I'd never even dream of doing to you what he did, I'd die before ever wanting to hurt you." He shook his head as his gorgeous chocolate eyes flicked over my face. My eyes wavered, my entire being starting to feel like it was floating at his words. Peter had all but just admitted that he loved me, that he wanted to be with me. Of course I felt the same. And this was my chance to show it. I nodded and bit my lip, Peter watching me with furrowed eyebrows as I stood from my bed and walked over to him. He gulped and kept his eyes on me, his gaze flicking in between my lips and my own eyes as I looked up at him. I took a deep breath, my body taking the step off of the mental ledge as I leant up and kissed him. His eyes widened slightly but he returned it immediately, his hands raising to hold my face as I also cupped his cheeks. His hands moved to my waist and pulled me into him, both of us smiling into the kiss as I curled my arms around his shoulders. I broke the kiss after a moment and touched our foreheads, his lips hovering over mine as we both revelled in the most perfect first kiss. Peter gulped and looked at me.

"I didn't think that you'd ever feel the same." He admitted quietly. I gave him a small smile and bit my lip.

"I always have, Pete, and that's the only sadness that I feel about him. The fact that whilst I wasted six months being with someone who clearly didn't love and appreciate me, I could have been with you. Someone who I know would never fail to love and appreciate me." I whispered.

"That's okay, angel, because that's over, and I'm here. And, if you'll have me, I'd love to make good on my promise of not letting you go until the day that I die." He nodded. I smiled and bit my lip, my heart so full of love for the boy whose arms that I was in as we stared lovingly into each other's eyes.

"I'll have you, Pete. Yes, I'll have you." I nodded, making him smile as he leant in and kissed me again.