Marvel smut shorts

My girlfriends sister (Yalena x Reader) {F}

"Where's nat?"
I asked as I walked into the kitchen to see Yalena eating MY pop tarts. She shrugged and carried on eating MY food, I opened the cupboard to see that they were the last pop tarts as well.
"Lena! You're really eating my last pop tarts?"
I exclaimed while I tried to grab the remainder of the pop tart out of her hand. Of course she shoved it in her mouth just before I grabbed it.
"Sorry did you want some?"
She asked laughing spitting crumbs all over the counter.
"Oh my god you always do this!"
I argued
"Well it didn't have your name on it did it!"
She shouted back.
"Your a joke you know it's all I eat in the morni-"
Our argument got cut short by Nat and Wanda walking into the kitchen telling us both to stop arguing and to shut up. We did as they said and just glared at one another.
"It's 9am and your both acting as children..."
Wanda pointed out, I didn't move my angry eyes from Yelena.
"Right okay well me and Wands have a mission to get to so try not to kill each other please."
Nat said as she grabbed her green vest of the chair next to me and kissed my cheek.
"I love you idiot."
She laughed as she walked out the door not giving me a chance to reply.
"I love you too."
I said to the closed door.
"So what do you want to do?" Yelena ask me. Her voice seemed to echo in the empty building.
"Go buy more pop tarts."
I sharply replied. She laughed and nodded heading to the door as I followed behind her.

~ A few hours later ~

We returned to the compound with three paper bags full of pop tarts.
"You happy now? Big baby."
Yelena laughed throwing one of the bags into my arms.
"Yes, yes I am, So now you've made it up to me, wanna watch a movie?"
I ask.
"Sure, but don't try finger me under the blankets..."
Yelena replied. My face went bright red as I stuttered trying to think of what to say back.
"I'm joking Y/N. You're dating my sister?"
She laughed, I was clearly lost for words, as she walked out the room towards the movie room.
"Red suits you by the way."
She shouted back in to the hall.

Does she mean my face? Well she must mean my face I'm not wearing red.

I finally picked a movie, of course it was Harry potter, and pressed play not waiting for Yelena to get back with the pop corn I'd just asked for.
"Really? You could have waited."
She stated throwing the pop corn down in my lap and choosing the seat next to me.

All these sofas and she's gunna sit there? What is she playing at.

About half way through the movie Yelena stated to clearly get bored and throwing popcorn at my head.
"Stop."
I asked not taking my eyes from the screen. She didn't stop.
"Lena please?"
I asked again and again she didn't stop. I grabbed a hand full of popcorn and threw it in her face and laughed.
"Oh your dead!"
She joked as she jumped on top of me trying to slap me in the face. I laughed as well we always play fight but Nat usually stops us before someone gets hurt.
We carried on play fighting for a few minutes until I rolled over to try get on top for an advantage but we rolled off the couch and I was straddling Yelena pinning her wrists to the floor.

Why is the room getting so warm? Wait why are my eyes locked on hers.

We sat in the same position for a good 5 minutes not breaking eye contact, both still out of breath. The room filled with tension that we both felt. All that was in my mind was her. Her beauty. I knew I had to break the silence,
"Red suits on you."
I blurted out. She laughed.
I didn't even realise I began leaning in before our lips touched. She didn't pull away, she was kissing me back. Her lips were soft and tasted like fresh oranges. I never wanted to stop kissing her. After a few seconds I felt her tongue massage mine. God it was amazing.

Hey idiot, this is your girlfriends sister your tonguing right now. What if she walks back threw the door and sees you straddling her younger sister? What if she comes in with Wanda and she reads your mind and sees all your thinking about is fucking your girlfriends little sister?

"Shit!"
I pulled away and got up quickly. Yelena did the same.
"We shouldn't have done that."
She said avoiding eye contact with me.
"Yeah I know."
I replied as my head dropped to the floor. Neither of us said a word for a few seconds.
"We can never let Natasha find out!"
Yelena practically shouted. I nodded still not looking up from the floor. She walked out the room before I could find a word to say to her.

Shit I just kissed my girlfriends sister!

- The next day -

Me and Yelena had been avoiding each other all night, which was easy saying how big the compound was and we were the only two in it. I walked down the stairs into the kitchen to see Yelena eating my pop tarts AGAIN!
"Your joking right?"
I said not even thinking. She looked up and pointed to the plate with two pop tarts made across the table.
"Oh, thank you."
I said with a smile. I sat down and started eating thinking what to say but my thoughts were intruded by the front doors swinging open.
"We are back!"
Nats voice echoed making me and Yelena jump.
"Oh my god, your both still alive?!"
Wanda said as her and Nat laughed, while me and Yelena tried to act normal.
"You guys are acting weird what's going on?"
Nat said as she hugged me from behind.
"Nothing!"
Yelena said a little to fast. Nat and Wanda exchanged looks.
"Okay well I need a shower, you coming?"
Nat asked me with a wink. I agreed and stood up to follow Nat out the room. I turned and looked at Yelena one last time. She looked sad? No no she looks Jealous?

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If you want a part 2 to this story let me know, cos I'm not sure I have an idea for it but we will see.