Where to begin, really?

I'd start with "once upon a time", but for one, that's way too cliche, and two, there's nothing really fairy tale-esque about it. I was about twelve years old, playing in the alleyways of the shopping center a few minutes from my house. Yeah, I'm a weird kid, what can I say? I had my super ball, which bounced each time I tossed it to the ground. I kept slamming it at the ground harder and harder. The first time, it reached to about eye level. The second time, it reached about two feet over my head. By the sixth or seventh time, I managed to bounce it so hard that it went up the the top of the building to my right...and over the edge.
Now, I was out of a super ball. Great.
Glumly, I began to walk toward the mouth of the alley. Before I could even take three steps, something clunked me on the head. "Oww!" I screamed. I swore I heard a snicker. Frowning, I looked over when something clattered over to the right against the trashcan. My super ball? How the...? "Hey!" I yelled up. "Who's throwing stuff?"
No answer.
"Fine..." I grumbled. Lightly, I tossed the ball up into the air and caught it. Not even thinking about whether I'd get my ball back, I chucked the ball up and over the side of the building. After a few seconds, when the ball didn't return, I kicked the wall, frustrated. Now, I was really out of a super ball.
"Knock it off, cry baby!" called a voice from above me.
"Who's there? What do you want?" I sniffled, trying to hold back my tears. I tried to make myself sound tough to hide the waver in my voice. "I know Kung Fu! I'll kick your butt six ways from Sunday!"
"No you won't," the voice teased. "You're just a scaredy baby. Where's your mommy? Want your mommy? Huh, huh?" The male voice didn't sound much older than myself at first. if possible, it got deeper and menacing as it continued to taunt me. "Go ahead and cry. No one will help you. You're all alone. No friends, no anyone."
I cowered with my back to the wall under the fire escape, now sitting with my knees drawn up with tears silently going down my face as I stared up at the edge of the building.
A shadowy figure appeared over the edge now. "Whatcha gonna do? Stupid girl doesn't even call for help. Why, I oughta -"
"LEAVE. ME. ALONE!!! I. HATE. YOU!!!!" I screamed it as loud as I could, vocal cords ringing in my throat. I burst into chest raking sobs and hugged my knees as tightly as I could.
"Hey..." I heard the voice say, soft as a whisper, gentle as a caress. "Hey, you... I'm sorry. I - I don't know what got into me. Wait, I'll come down."
I looked up as he stood up on the edge. I opened my mouth to scream again, knowing he would jump. As his feet left the edge, I watched, dumbstruck. He had leaped gracefully toward me and almost floated (yes, I repeat: FLOATED) to the fire escape and landed with a quiet thud. He didn't even use the ladder to climb down off it. He hoisted himself over the railing and landed right on his feet. No human could have jumped from that height without some kind of injury. Dark hair fell into his face, which he only brushed back to reveal bright green eyes. The boy just looked at me with a crooked smile, cheeks slightly flushed. I didn't know what to say to him, and it looked like he didn't know what to say, either.
"Ah, um..." He cleared his throat. "You have snot on your face."
I got up off my butt, stood up, and full on slapped him right across the face. Tough girl face on. "Jerk." My hand stung and I could already feel it turning red.
The kid stared at me with wide eyes, an outline of my hand forming on his face. That wide-eyed stare sort of changed into a look of awe (awkward). He smirked and put a hand to his face. "Nice shot. I'm Aspen Crossbow." He held out his hand.
I shook it grudgingly. "Haven Malory."
And that's how we began. I never did figure out why he was such a jerk to me that day. He's gotten angry before, but I haven't seen him that bad since the day we met.
Must of been PMS.