What happened to Zack?

After sitting for hours on the plane, we arrived in Spain, got off, grabbed our suitcases and left there, outside my dad's friend was waiting for us to take us to the house that dad bought online. I grab my cell phone to text Zack.

Me

Zack already i arrived a few minutes ago, everything is beautiful and it's a bit cold, but I'll get used to it and you?, how are you doing in these hours without me?

Message sent at 1:45 pm

I waited a few minutes and Zack didn't answer me, he always answers instantly. I decided to wait a little longer.

Me

Why don't you answer? Have you changed me for someone !?

Message sent at 14:09 pm

It bothered me because it was weird that Zack didn't answer my messages, it's the first time he's done it. But hey, I hope it's not bad. Like he says, I look toxic hahaha.

.....

The house that dad bought is very beautiful, it had three rooms, for my brother, for my parents and mine who was going to be alone for a long time until the boarding school vacation.

-Son, now you can settle in your room, daughter you can sleep tonight in yours, just leave it tidy tomorrow ok? -Mom

My brother and I nodded.

I went up to my room to see if Zack had answered my messages and nothing has even seen them, I tried calling him, and nothing, this is very strange, right now I feel alone, I had to grab one of my books to read it, the one that I have now called "Eleonor & Park", I start reading until I fall asleep.