Dating the wrong person [L.S]

Dumbfuck

"Are you sure this is Louis is your boyfriend?" Evan asked
"Of course i'm sure?! I'm not stupid" Harry said angry. "Who are you and what did you two did last week?" 

"I- I mean, he was at this club with his friends? And we met there, and i mean i flirted with him and stuff, and at first he didn't flirt back but after a few drinks he did and we made out and stuff?" Evan said confused
"Did he gave you his number?"
"Ehm, no. A friend of a friend of his gave it to me" 
"O-Okay, ehm, thanks, not for kissing my boyfriend, but for telling me and stuff." Harry said now getting sad
"Of course, i'm sorry, I mean, I didn't knew he had a boyfriend, otherwise i wouldn't have kissed him. "

After Harry hung up, he saw Louis coming back from the toilet. He didn't really knew how to act, should he confront him about it? Or say it later? He didn't want to cause a scene, but this is kind of important considered they just bought a house together.

"So lovely, what did i miss?" Louis asked giving Harry a kiss on his cheek
"I could ask the same thing actually." Harry said annoyed
"What do you mean? I went to the toilet, what could go on there?" Louis said with a sarcastic tone. 
"Can we go to the car? I can't do this here"Harry said looking around in the lunchroom they were
"Yes of course, but you're scaring me Haz" Louis said grabbing Harry's hand walking to the car.
"You should be" Harry said
"Haz, tell me what did i do?" Louis said really confused

At this point they were in the car already and Harry could feel tears coming. "Hey, Hey, don't cry. Come here give me a hug" Louis said with his arms open ready to hug Harry, but Harry thought otherwise. 
"You,- You cheated on me?" Harry said in disbelieve and disgust. 

When Harry said those words Louis immediately stopped his movements. He couldn't move a single bone. 

"No, no, no Harry, listen this is not what you think-" 
"This is not what I think? That's what you have to say? Some Evan guy called your phone, so i just figured, i'll pick it up for you so i can get a message. When i got the fucking message, he told me dat you two had fun last week??" Harry said anrgy and sad at the same time.

Louis really didn't know what to say so he just let Harry rant.

"So i was fucking like, what do you mean you had fun? what kind of fun? You know what he fucking said?? 'You know, the thing you do in bed?" 
"Louis, wh- why don't you lov-love me? " Harry said sobbing
"I do! I do love you so fucking much. This is all just a misunderstanding. Please listen. I love you so much haz, you're my fucking world, please don't think i won't love you." Louis said with tears filling in his eyes.

"How can this be a misunderstanding?" Harry said confused
"Okay listen, I didn't sleep with ANYBODY, hell in the bloody world, i would never do that. I told you i am intend to marry you and i'm keeping it that way. " Louis said while a small blush formed on Harry's cheeks
"What happened at the bar was this. Liam actually made out with this Evan, but you and i both know that he is dating Ashton. He knew it was wrong but he was just too drunk. Evan asked if it was okay to call him sometime and asked for his name. As Liam panicked he quickly  gave my name and said someone else had to give my number because he doesn't know my number out of his head. After all that he came back to me to tell me and said it was dumb but he didn't knew what to do else." 

Harry was confused, he wants to believe Louis, but he somehow can't. He was so convinced Louis would've left him for this Evan guy.. 

"I want to believe you, i really do" Harry start
"But you can't" Louis said sadly. "Call him." the blue eyed boy stated. "Call Liam to ask him" 
"I-I mean i guess i could do that." Harry said unsure look grabbing his phone to call Liam

"Hello?" Liam asked
"Hi Li, it's Harry" 
"Harry? Hey buddy, how are ya" he said enthusiastic
"I guess- I guess i'm alright." Harry said doubting

"You guess? What's wrong mate?"
"Uhm, do- do you know Evan?" 
"I- Yeah" Liam said a lot softer
"Because, he called Louis, and i picked up his phone, and he told me that him and Louis made out, but Louis told me the real story and said that you gave Louis' name and that you actually kissed him. I-is that true?"
"Oh my- Yes Hazzy that is true, don't you ever worry about Louis cheating on you okay? He wouldn't do that. I'm just a dumbfuck and had to get out of that situation. I'm so sorry if i put you in such a position where you would doubt Louis loyalty for you." Liam said in a small rant

"It's okay, i'll talk to you later" "
"yeah sure, bye bud!" 

Harry looked at Louis with a small smile. "I'm sorry for doubting you Lou"

"It's okay Haz, i would've done the same thing. But always, always, always remember, that I love you okay? " Louis said genuine.
"And I love you."