Bakukiri x reader. Almost perfect

Help

You walked quickly into the dorms avoiding eye contact and saying quick little heys to the people in the common area. You quickly took the elevator up to Mina's floor and banged on her door. She opened it up and immediately looked worried.
"What's up?" She asked trying to read your face.
You walked past her and threw yourself down on her bed staring at the ceiling.
"Something's wrong with me" you sigh and she looks at you confused.
"Are you going to explain that sis?" She asked annoyed with how dramatic you are. You sat up facing her.
"I saw ... well no I heard something this morning .. I wasn't supposed too but ... ugh ... kirishima and bakugou are making me sick." You blurted our the last part not knowing how to put your feelings into words.
"Bitch what the hell are you talking about??" Mina was amused at you but annoyed you wouldn't just spit it out.
"I don't know. I went to the gym with kirishima. right?"
"Right." She nodded still confused.
"And then I heard something and it made me feel feverish and shaky like I was sick and now I can't focus on anything but at the same time my brain is thinking to much and my head hurts and I .." you continued your rambling until she interrupted you.
"What did you hear?" She questioned. Your face immediately burning again. You told Mina all your secrets but this one was by far the most embarrassing. Plus what if you sounded creepy? How were you supposed to know he was going to be doing that? She saw your head going into a whirlwind again and said
"LUMI!"
Your eyes shot up to hers and you simply said
"He was I don't know like touching himself?" Your eyes hit the floor as your hands wrung together tightly feeling the heat rise to your ears.
"And he said my name while he was you know.."
you looked back to her trying to gauge a response and she was covering her mouth giggling.
"OMFG THATS HILARIOUS!" She said laughing hysterically.
"WHAT!? NO IT ISNT!" You cried.
She still was laughing choking on her words as they came out.
"Babe he's always had a huge crush on you and why would that surprise you?" She said and you stared at her in confusion.
"He doesn't even let bakubabe train with him in the mornings let alone wake him up everyday. He's constantly flirting with you are you dumb?" She asked amused. You still didn't understand. She sighed "you know when we all went out to dinner after the dance that one night?" You nodded.
"Do you also remember how he wouldn't stop staring at you or telling you how beautiful you looked. He was practically drooling over you the whole night." A look of slight realization crossed over your face.
"You really are dumb." She laughed.
You threw a pillow at her in response.