Clary and Alec

Chapter 2

Clary pov
As I was practicing shooting my bow and arrow, Alec was really quiet . It's not until I kept missing that he decided to finally speak up. "You're doing it wrong" he said. "Oh really, I hadn't noticed " I said sarcastically. After another couple misses , I heard him laugh. "What is it?" I asked annoyed . Smirking, he said " nothing it's just hilarious watching you miss all the time." 
"Well, I wouldn't miss if you actually showed me how it's done" I replied. He sighed, "fine." He gets up and starts walking towards me. Then he goes behind me. " well first you have to spread your feet like this " he says putting his hands on my waist. I flinched at his touch. He put his hands on mine and stepped closer to me. He leaned in and put his mouth to my ear. " now you just pull it like this and let go" he whispered and I could feel his hot breath on my neck. When I shot the bow and arrow it hit the target right in the middle. "Wow I actually did it " I said , smiling. I turned around and without thinking I reached to give Alec a hug. As I was turning around I didnt realize how close he was to me until I tripped over his feet. Right before I fell, he caught me in his arms. He pulled me back up and held me close to him and I put my hands on his shoulders. "Uh thanks" I said smiling awkwardly.
"No problem." We quickly pulled away when we heard someone clear their throat. "Oh, hey Izzy" Alec said, "what's up." "Um you have a visitor"
"Really, who?" He asked. "Me" said a familiar voice. "Magnus" I mumbled under my breath. Alec quickly turned to look at me as if he was apologizing for something.

Cliffhanger!!!!! Why is Magnus there and what's going to happen between clary and Alec!!!!!!!