England x reader: A Gryffindor and a Slytherin

"Mind if I sit here? The rest are full!" A messy haired English boy asked popping his head out from behind the door of the cabin you were sitting in. You were on your way to Hogwarts School of Witchcraft and wizardry, where you were going to study magic, it was your first year attending this school and you were rather nervous.
"Of course!" you nodded and the boy sat down on the seat across from you.
"My name is Arthur Kirkland, I'm a pure blood. I come from a family of Slytherins but my older brother was put into Gryffindor and you are?" he introduced himself and you were quite surprised how forward he was with you.
"My name is _____ ______. Both my parents are mugggles...." you mumbled ashamed of what he might think.
"Oh a mudblood..." he muttered. 
"EXCUSE ME??!" you snapped, how rude! you just meet the boy and he was already calling you names, mudblood he must have some guts to say that aloud. It took you alot of willpower not to go up to him and smack him in the face. "I'll have you know I'm every proud of my family!" you added in an irrated tone. "I'm strong enough to get into a good house like Gryffindor...."
"A Gryffindor..." He scoffed. 'can I hit this guy please!!!??' You yelled to yourself.  You looked up at the boy to get a better look at his appearance, he had beautiful emerald green eyes, messy blonde hair that gently dropped over his unusally bushy eyebrows. He was rather handsome but if he wasn't such a git you would've probably fallen for him....

The train shook a bit which grabbed your attention and made you look out the window. Acres and acres of beautiful lush Green fields and mountains, "Wow..." was the only word that could  come out of your mouth, the scene was breathtaking....
"We'll be arriving soon so we better get changed into our robes...." you said breaking the uncomfortable silence between you and Arthur. You stood up and held out your hand for Arthur to shake but he just looked at you with a disgusted expression as if you were diseased or something.
".....at least I'm not destined to be a death-eater......" you muttered as you shot him a glare and left the cabin to get changed. 'Oh lookie here I see I made a rival already and I haven't even arrived at the castle yet~' You laughed to yourself as you made your way through the train.
'Smooth move Arthur...just smooth...I made a rival with someone already....' Arthur sighed. He felt bad with what he said to you so decided that he should apologise to you. He found you at the sweet trolley buying some chocolate frogs and pumpkin juice. 
"______!!" He said loudly running up to you. You jerked around and Arthur ran straight into you spilling the pumpkin juice all over your clean robes.
"Is this the boy who called you a mudblood?" Elizaveta Héderváry said with a pissed of expression, she was a Hungarian witch also attending Hogwarts for the first time. You had met her at the train station and the two of you became fast friends, you had just explained to her about Arthur calling you a mudblood when you met her at the sweet trolley.
"_-_____ I'm terribly sor--""Save the excuse for another day! How dare you call sweet _____ a mudblood!!" Elizaveta shouted.
"I'll have you know I was coming to apologise to her but I understand she doesn't deserve my apologises..." Arthur spat and quickly got up off the ground. "From now on ______ we shall be rivals and I'll be sure your experience in Hogwarts will be an unpleasant one!" He yelled and ran off.
"Eh? Am I meant to be afraid....?" You asked confusion written all over your face.
"Honey I have no idea...." Elizaveta laughed helping you up.
"I guess we'll never understand men!" You both laughed and made your way back to where Elizaveta was siting. 
'Dammit Arthur you git! That was so ungentlemanly of you!! Why do I have to be so cold to this girl!!??' Arthur yelled to himself, he couldn't explain it but you  made him act weird and he couldn't control himself resulting in him insulting you or getting flustered and yell things he didn't mean at you....'why?' was the question he  continuously asked himself only to find no answers....