Childhood Friends? Or much more? (LEMON)

Chapter 1- Just a normal day.

I wake up to the smell of bacon.
"Are you cooking Tsuki?!" ,I yell.
"Yeah." ,Tsukishima replies.
I quickly rush to get dressed. I run down stairs with my uniform on messily. Just a quick back story to this. Tsuki and I have been best friends since Elementary! We decided to live together for highschool since his brother moved out of their apartment.
"Smells great!" ,I sit down.
"Get up." ,Tsuki scoffs.
"What?" ,I pout.
"Fix your uniform idiot." ,Tsukishima glares.
"Why are you so cold?" ,I whine.
"Shut up." ,he turns away.
I fix my uniform and sit back down. Tsukishima is always cold, but he's somewhat nicer to me than others. I admire his height and start to day dream. I snap out of it as Tsuki places the pan onto the table.
"Thanks!" ,I start to dig in.
"Pig." ,he smirks.
"Stop." ,I glare.
"Make me pig." ,he laughs.
I finish my plate quickly and put on my shoes. He got to me this morning. I hate being called a pig. It's not like he'd care if I leave him.
"Where are you going?" ,he glares.
"To school." ,I pick up my phone.
"Not without me." ,he uses his quick reflexes and grabs my wrist.
"..." ,I feel a tingle in my body but yank away.
"Stop being a baby." ,he says.
"Stop being a salty bish!" ,I groan.
"Just wait for me." ,Tsuki mumbles.
"Fine." ,I sit back down.
I sit there and fidget with a strand of hair. I feel a pair of eyes looking at me. When i look up i stare straight into Tsuki's eyes. His pupils dilate and he looks away. I start to look at his figure. I never noticed but he's kinda cute... WAIT WHAT. NO NO NO STOP IT >:(. DONT THINK OF SUCH THINGS!
At School
   I walk to my locker and unlock it. Out falls a polaroid picture. I pick it up and flip it over. E-EH?! IT WAS A PICTURE OF- OF TSUKI! B-But he was naked in the shower?! Who put this here! I look around for someone, but the only person i saw was Tsuki. Who was changing his shoes in the locker a bit further from mine. I blush and stick the picture into my bag. He had light abs and slightly toned muscles. And his uhm "thing" was- NO STOP IT DONT BE SO UNHOLY NATARI! I look back over at Tsuki and he looks shocked.
"Hey are you ok?" ,I start walking over to him.
"Yeah." ,he shoves something into his pocket.
"Are you sure?" ,I look at him.
"Yeah let's just go." ,Tsukishima starts walking to class.
"So what do you wanna do after school today?" ,I smile.
"I don't know." ,Tsuki doesn't look at me.
"But we always hang out after school!" ,I pout.
"We can talk about it at lunch pig." ,he laughs.
I elbow him and hear him wince in pain. He flicks my forehead and we bicker playfully.
In class
   I sit down at my seat next to Tsuki. Most of the lecture went by pretty quickly. I could see that Tsuki was deep in thought. He wasn't paying attention to anything around him. This was my chance! I can get whatever was in his pocket. I reach my hand over very slowly. I felt the corner of a paper like object. Just before i could slide it out i felt a strong grip on my hand. I look up at Tsukishima to see him glaring daggers. He releases my hand and grabs the thing from his pocket to transfer it into his bag. I pout and go back to the lecture. I closed my eyes and fell asleep. Tsuki took this chance to grab the picture from my bag. He looks up and sees me asleep.
"Wake up dummy." ,he whispers and taps me.
"Huh.." ,I wake up groggily.
"H-Hey give that back!" ,I whisper pointing to the polaroid.
"Make me dummy." ,he puts the picture on his thigh, and smirks at me.
Without a warning I reach over and plant my hand on his thigh. I cover the picture and glared at him. He looked flustered and turned away blushing. I was confused because i've sat on his lap before, and he never reacted like that. I quickly snatch the picture and put it into my bag. I quickly return to the lesson without a second thought.
Tsuki's POV:
I taunted her with the picture on my thigh. She reaches over, and her fingers brush on the area of my dick. I turn away flustered and feel that spot grow. I can't let her see me like this. I take off my school jacket and wrap it around my waist.
Lunch Time!
"Tsuki!" ,I tap on his shoulder.
"H-huh?" ,he jumped.
"It's lunch time let's go!" ,I pull on his arm.
"Right." ,he gets up.
I couldn't help but think about the polaroid. Someone put that in my locker and i don't think it was Tsuki. Which means there's a creep who is plotting something. I start to get a little worried.
"What's wrong?" ,he looks at me.
"Oh nothing!" ,I smile.
"It's written all over your face Natari." ,he scoffs.
"It's nothing important." ,I walk a bit faster.
"Hey it's the love birds..." ,Some students whisper next to us.
"Excuse me?" ,Tsukishima turns and looks at them.
"O-Oh hi!" ,they shake.
"It's just a stupid rumor Tsuki." ,I pull him away.
"They think we are dating Natari." ,he groans.
"Why does that matter?" ,I felt a bit of sadness.
"It doesn't but what if they try to make us do something?" ,he puts his hand in his pocket.
We ended up walking to lunch in silence.
At Home (Night time)
   Today was pretty uneventful honestly. We just hung out at home. I woke up thirsty and sweating. Looking at the clock i see it is currently 1:13 a.m. So i got up and opened my door to the hall. I see that Tsuki has his door open a crack, and his desk lamp on. I thought he was up studying, so i went to the kitchen quietly. I hear a noise come from Tsuki's room...

CLIFFHANGER!!! You can probably already guess what's gonna happen ;)). Posting the next chapter rn because i hate cliffhangers too.