Better than Revenge (Story for Someone_Like_You's Contest)

"Isn't this place beautiful?" I said.
Alex, my boyfriend, looked at me and smiled.
"Not as beautiful as you."
I blushed, and we walked forward.
The sand was hot under my feet. The waves crashing against the rocks and the rapid wind roared in my ears. I saw dozens and dozens of teenagers. Two of them were throwing a frisbee back and forth, and one glanced over at me. He grinned, but I rolled my eyes and pointed to Alex.
His eyes narrowed, and he pretended to have never saw me.
I felt lucky. Out of all of the girls in town, Alex chose me to be his girlfriend. And our relationship, going on for seven months, by the way, was going perfectly!
The only thing that bothered me was that girls were always hitting on him. But being the guy he was, he always ignored them and turned them down immediately. And whenever guys hit on me (which rarely ever happened) I did the same.
But, I still felt incredibly grateful to have found a guy so......perfect. Perfect for me.
"You hungry?" He asked me.
"Oh, a little."
"I'll get us a snack or something. Soda?"
"Yes, please."
I smiled and sighed as he walked off.
"Hello there!"
I whirled around. There was a teenage girl, incredibly skinny and sort of tall. She was blonde with tan skin and blue eyes.
"Who are you?" I asked.
She smiled fakely. "I'm Britney. You?"
"Colbie."
"Cool! Can I ask you a question?"
"No."
She laughed in a forced way. "Well, that guy over there?" She pointed in the direction Alex had left. "Who is he?"
"My boyfriend."
She laughed, but this time it was genuine.
"That's funny. But truly, brother, cousin, what?"
"He's my boyfriend." I repeated in an aggravated voice.
An evil grin spread across her face. "Not for long."
She strut off in Alex's direction, not bothering to look back to see me holding up my middle finger.
I was angry at her, but I wasn't worried. Alex would just turn her down like he does all the other girls. He would, wouldn't he?