Kurt gets super pouty!
-Tail is droopy
-Cheeks are purpleish blue
-Glares at the guy
-Scared Crybaby
-Gets super touchy and whines for your attention!
-Depressed little dork that needs a lot of reassurance that you love him

One-shot
(Narrator's pov)
Kurt and the gang were off on a mission and sadly you were on suspension for sneaking out the other night so you stayed cooped up in your room. It was so boring in huge institute and you were craving for some excitement, you peered at your phone with a questioning look. You knew someone that could help you cure your boredom but Kurt didn't like you being around him....but Kurt wasn't here now was he? The (h/c) haired mutant smiled as she pounced on her phone and dialed her best friend, tonight was going to be fun!

(Some time later)
Kurt smiled finally returning from the mission with the others, he hated being away from you for long so he was glad to be back. He ported to your room and knocked on the door with his three fingered hand. His tail wagged happily behind him as he waited for you to open the door but you didn't.

"Meine geliebte? Meine geliebte are you there?", Kurt asked as he knocked again, "Are you asleep?"

No answer. Kurt got a little worried and ported into your room but you weren't there, his tail dropped in disappointment you weren't here to greet him. He ported to the living room hoping you were there but nope, the library nope, the garden nope! The smell of brimstone lingered all over the mansion bit still there was no sign of you.

"Shhhh if anyone sees you I'm so in trouble."

Kurt's ears twitched to the familiar voice, he quickly ported to your location but his smile quickly vanished when he noticed Pietro with you. You laughed nervously as you had been caught red handed by your lovable elf. Kurt's ears and tail drooped down but his face showed off nothing but jealousy. Your white haired friend chuckled as he noticed the purpleish tint across Kurt's face, the blue mutant's yellow hues glared lasers through Pietro's head but it was the funniest shit ever.

"Well lover birds, I can tell there's some tension so gotta blast! Men like me need to keep themselves occupied and jealous boyfriends aren't my style!", Pietro laughed as he zoomed away.

(Y/n) pouted as she glared at the door, Pietro would so be getting his butt kicked later on. Your (e/c) hues wandered over to the clock and your heart skipped a beat when you realized you were late for training with Logan!

"Crap I'm late!", You squeaked quickly changing into your battle gear.

Just before you ran out the door you felt a strong tug on your wrist, you knew Kurt was mad but you'd have to explain to him later.

"Liebling....", he whined staring at you with those puppy dog eyes that made you weak.

You pressed a small kiss to his blue cheek before escaping his grip and running off to the danger room. Kurt walked out of your room slowly and sighed as he watched you run out of sight. He hated being jealous but he was  always afraid of losing you especially to good looking men like Pietro. He ported to his room to wait for you until your training was over, he wrapped himself in his blankets as he became a depressed little bundle of blue fur.

(Y/n's pov)
I panted for breathe as I finally defeated the last bot in the danger room, training sessions with Logan always sucked. I collapsed to my knees as Logan came up to me with a smug grin. He ruffled my (y/n) haired and congratulated me on completing my punishment. I was excused and went straight to the showers too wash away all the stupid sweat! While I stared at the tile of the shower I could only think about the sad look in Kurt's eyes as I left him. Of course I knew he was jealous, he always gets jealous around boys especially Pietro but it's not like I'd leave such a great person for a jerk like him.

"Maybe I should go talk to him.", I sighed.

As soon as I finished my shower and changed I headed over to his room and quietly knocked on the door.

"Blue....Blue are you there? Kurt, my little elf, I know you're there please let me in.", I sighed pressing my forehead against the door.

"It's open.....", his voice sounded from the other side of the door.

I slowly opened the door and noticed him rolled up in a little ball on his bed. I sighed and walked up to his bed and leaned against him, his tail swished around underneath the covers and I couldn't help but smile.

"Kurt, ich liebe dich.", I smiled.

I felt him jump to my words and his tail snuck out from the sheets and was waving around happily. I moved away the sheets to see his face a bright purple color as he avoided eye contact with me but his tail pretty much told me how he was feeling. I snuggled my body against his until eventually he had to open up his body and lay down with me on top of him. I snuggled my head into the crook of his neck and smiled as his playful tail wrapped around my leg.

"Ich liebe dich.", I hummed.

His blue arms wrapped around my waist and held me firmly as he whispered back the same phrase in his native tongue. I couldn't help but smile as Kurt pressed kisses against my ear and cheek. 

"I don't like it when you're with Pietro. I'm always afraid that you'll end up loving him and leave me and....*hick*.....I-I'm...Ich bin verängstigt.", Kurt choked out as tears started to fall from his yellow hues.

He really was to dramatic sometimes but it was cute since he loved me so much. I gently kissed his tears away before placing a firm loving kiss on his lips, I petted his cheek as I continued to kiss him. Eventually he had settled down so I pulled away and smirked at his cute blushing face.

"I love you Elf, don't ever question that, and you know I'll say it to you in every damn language just to prove it.", I pouted staring down at him seriously. 

"Do you really?", he teased.

"I will play with the tip of your tail until you moan and tongue kiss until I leave you breathless just to prove it.", I threatened playfully as I stated playing with his sensitive tail.

Eventually Kurt gave in and we just ended up cuddling together until we both fell asleep. Sometimes this little dork was to much to handle but god did I love this gorgeous blue fuzzball. Maybe I should call Pietro over more often, especially if Kurt gets like this.