my girlfriend’s brother
warning: none
pairing: steve x female reader, she’s also just dustin’s half sister! (i’m not white so…)
words: 1.1k+
summary: you’re in the car when dustin implies that steve is still in love with nancy.
an: just a cute, little steve blurb because i have yet to get over him. not edited oops
“do you want to tell me what that was about?,” dustin interrogates the boy sitting in the driver seat.
“what was what about?,” steve’s eyebrows furrow, not quite understanding what the boy is trying to get at.
“i don´t know, how you practically just threw yourself at nancy,” the boy smirks, teasing him. steve doesn’t miss the way you roll your eyes, avoiding his gaze, finding the view outside much more interesting. it all plays out unto his rear view mirror and he knows he’s in trouble.
“i-i did not!,” he defends, hating the way he stuttered. it’s not like he wasn’t sure, it’s just that the way you were silently fuming in the back has got his tongue stuck in his throat. you were absolutely adorable, green eyed monster and all.
“look at you! you’re a mess steve, you’re totally still in love with her! right, y/n!?,” dustin turns around in his seat, wide smile reaching up to his eyes, searching for validation in yours. you almost want to punch his little face in but you knew that it was no one else's fault but yours. you were the one who asked steve to keep your relationship on the down low. you were the one who asked for time - time to properly tell your brother everything.
but now, 3 months later, you still haven't found the courage to tell him that you like like his best friend, hell maybe you were even in love with steve harrington. so, with the most enthusiastic grin you could pull off, lips bending upwards, teeth clenched into what you thought could pass off as a smile, “yeah… totally!” you agree.
“told you!,” dustin focuses his attention back on steve, completely unaware of the hole he has dug for the older boy. you quietly huff, not being able to stand the annoyance seeping throughout your body.
quickly, you hopped out of the car, slamming the door closed, startling the two boys, making steve wince. “jeez, what’s got her panties in a twist,” dustin´s eyebrow furrows, looking at your figure through his window, your back turned to them, leaning against the door you just got out of as you wait for max.
steve lets his head fall into his steering wheel, exasperated sighs falling from his lips. “listen here you little shit, first of all don’t ever say panties again, second,” he pauses, wondering if it would be a good idea to finally tell him that he’s not in love with nancy and is instead in love with his sister. ‘yeah, no’
“second..what steve?” dustin waits impatiently, legs bouncing.
“second, i’m not in love with nancy and you need to stay out of my love life!” he says instead.
“yeah, sureee steve i would love to stay out of your love life…but how can i do that if your love life literallY INVOLVES MY SISTER!” dustin’s voice raises with every syllable, a confession that leaves a stunned steve staring at him with wide eyes.
“i don’t- i-i’m not, i- what?” the older boy sends him a look mixed with surprise and confusion, like receiving a birthday gift that you have to pretend to like for the sake of the other person, worry laced in his voice from having been found out.
“i’m literally the one who solves everything, you don’t think i would notice you sneaking into our house at night! you don’t think i know the sound of your car!?,” dustin points out the facts, interrogating him.
“h-how long have you known?,” steve sighs in defeat, hands pushing back his hair that's fallen out of place, the only confirmation the boy needed.
“three months,” he confesses.
“i’m so so-¨ steve gets ready to apologize. truth is, he's had this apology ready way before you started dating. once he knew his feelings for you go way beyond friendship, dustin´s tooth grinning smile was already at the back of his head. his best friend´s words settle into his mind, making him forget all about his prepared speech, ¨wait… that’s when we started dating,”
“yeah,” he nods, a menacing smile on his face.
“y-you knew all this time?,” this whole time, you and steve have been going around secret dates that always consisted of late night interruptions by the boy in front of him. this whole time, he's had to discreetly glance at you, not stand too close, hands always just lingering side by side yet never clasped together and he had to be okay with that. had to be okay with you sitting at the backseat because the front was saved for your brother.
oh, how he could murder this henderson kid if he wasn´t his best friend and your brother.
“mhm and i thought hey let me be a nice best friend and brother and wait for them to tell me, but won’t you look at that three months later and you guys are still lying to my face,” dustin´s complaint broke him out of his thoughts.
steve looks at the boy who was clearly upset, “man, i´m sorry,¨ he sincerely apologizes, a frown on his face. he truly did feel awful for hiding this from dustin. he wonders if the boy would even trust him anymore and that thought alone sunk steve´s heart.
finally having enough fun of his own, dustin breaks out into a sheepish smile, “god, i wish i could take a picture of you right now,” he laughs, a hearty laugh, one that perks up steve´s ears as he sports a look of confusion. he doesn't get this boy sometimes.
“relax dude, i don´t care, my best friend and my sister, the two people i love the most, it's finee, yeah i'm a little upset you guys were hiding it from me but after a couple of weeks, i got over it,” he shrugs nonchalantly. like his words had absolutely no weight in them.
for steve, it was everything he wanted to hear.
“just don´t break her heart harrington or i will find a demodog from the upside down and lock you in a room with it,” the curly headed boy finished, trying to sound tough.
steve practically had to force himself to hold back his laughter at the boy´s empty threat, saluting him, “yes sir, i promise, i´ll even help you capture the demodog,” the two boys mirroring each other´s wide grins, a promise sealed with a fist bump.
“yeah, yeah i trust you, but right now, you should probably fix this whole ´nancy´ mess,” dustin quotes, bringing him back to the current situation.
“ugh!, there is no ´nancy´ mess! you just made that up!,” steve groans, once again annoyed at the boy in front of him.
“oops,” dustin shrugs teasingly, “wellll, once you fix it, your relationship will get stronger and all that crap, right?,” he sends the older boy an apologetic smile.
steve immediately dishevels his hair, both out of love and irritation. stepping out of his vehicle, arms finding their way around your waist, a light kiss to your shoulder, ready to reassure you that you had absolutely nothing to worry about — not nancy, not dustin.
“baby…”
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