LokiXReader [One Shot] - Misunderstandings

  The halls of Stark Tower were long and lonely. Loki stalked them back and forth, bored as ever. It's been some months since the Chutari attack on New York, and Thor had returned from Asgard to see Jane. You knew Jane personally through work, and she introduced you to Thor. He, being the loving brother he is, thought you would make a good match for his brooding younger brother. And after a lot of negotiating with The Avengers, and some yelling sessions with Tony, they finally agreed to let Loki back onto Earth, under certain circumstances. One of them being he wasn't allowed to leave Stark Tower. And the only thing keeping him from destroying New York again was you.
  You had decided to spend some time with the demi-God's brother today though. Loki was a little less than ecstatic about that. The thought of his only companion spending time with his obnoxious brother drove him mad. He sighed, running his hand along the wall as he walked. Once again, he strode by Thor's room where you two were getting along quite well. He stopped in his tracks as he heard your familiar voice.
  "No, Thor, it's too big! Here, let me-"
  "Nothing is ever too big for the mighty Thor! I shall wield it like my hammer."
  "Well, it's too big for me! This is a delicate procedure. I'm not sure how you guys did it on Asgard, but we're on Midgard, so we're doing it my way!"
  Loki's eyes grew wide as horror struck his being. Surely you weren't... with Thor? No, of course not!
  "But surely the God's way is better!"
  "Well "the God's way" is gonna tear it in half if you're not careful!"
  Loki's heart dropped into his stomach. He pressed his ear to the door to hear you two more clearly.
  "I'm sorry, I can't help it. Doing something like this with you is so exciting! You're truly experienced at this!"
  Loki gripped his chest, fury boiling in his gut.
  "Hehe.. well, it takes a lot of practice. Now here, stroke downwards this way.."
  That was it. That was the last straw. Loki wasn't going to let this happen. He reared back, and with a fierce kick, the door burst down. You and Thor gasped, you slightly jumping back in shock. Loki's mouth dropped. You two were... painting?
  "Oh, hey Loki. You scared me. What's up?" You looked back to your canvas, picking up the small paint brush again and handing it to Thor.
  "Yes brother, how are you? You sure gave us the shock! Care to join us in some painting?" He flashed Loki a big, toothy grin. Loki stood frozen, dumbfounded. So you were just... painting!? How on Asgard did he let his mind jump to conclusions like that!? Loki's eyebrows furrowed, and he let out a throaty growl.
  Without a word, he stomped over to you, threw you over his shoulder, shot Thor a nasty glare, and stormed out of the room.