He's a sweet alien ~ Justin Bieber fanfic

The hair

"What is this?!" I hear mom yelling waking me up. I've slept the whole night on our living room's floor. And I'm not the only one who wakes up to mom screaming. The boy that I took in last night also wakes up. He jumps up from the couch and runs to living room's corner. He looks super scared and he's still naked as you can guess. 

"Mom! You scared him!" I shout and walk towards the boy. "It's okay. She's just confused" I try to calm the boy down. 

"Who the hell is he? And why is he naked?!" mom yells again. The boy looks even more scared. 

"Mom would you calm down for a moment?" I ask and look her with my serious face. "I'm trying to figure it out." I turn my eyes to the boy. "What's your name? And why are you here?"

"My... My... My name i... is... Justin and... I... I don't know... why I'm here... I... I can't remember" the boy says. I see little tears starting to fall down from he's eyes. 

"Okay Justin. Everything is gonna be okay. I promise" I say and look at mom. "Do we have any clothes that we could give to him?" Mom nods. 

"Steve go get some clothes from your dad's old closet" she says to Steve and Steve starts running upstairs. Yes. We still have dad's clothes. When I said he just left, I ment it. He left without taking any of he's stuff with him. So that's why we still have his clothes. 

Soon Steve comes back. He brings a white t-shirt and shorts with him and gives them to Justin. 

"Here. I couldn't find any underware if it's O.K. to you?" Steve says with a weird look on his face. 

"It's... fine... Tha... Thanks..." Justin says. He puts the clothes on. They fit him perfectly. 

"Okay sweety. Let's get you some food. You look like you haven't eaten anything for days" mom says smiling. She walks to the kicthen and Justin follows behind. While he's walking I notice something weird. His hair starts to chance color from the beautifull brown to blond. What's going on with this guy?