Geek Pro Quo

"Eyes are up here, little boy!"
I gulp and lift my eyes from Tiffany's tight pink sweater, hugging her firm tits that are RIGHT in front of my eyes. Can you blame me? Being smaller than most girls in my grade rarely has any advantages. Mom says I'll get a growth spurt eventually, but I doubt it, I'm almost 19! As is Tiffany, but being a girl, even in her usually high heels, her tits shouldn't be so close to my eyes.
"So - what yo you say, geek?"
"About...?"
She sighs theatrically.
"You boys really can't focus on two things at once, can you? Staring at my tits And listen to me? About helping me with my maths test!"
Yes, right. That's what happened. For some reason, she grabbed me by the backpack on my way home and pulled me to this remote place behind some overgrown bushes in the rear of the main building of our school to ask me to help her study. My mind clears again. A little. Not that that helps me to understand this whole situation.
"I... why... I'm not..."

Great. I sound like a stereotypical nerd from that sitcom - who can't talk to girls. I Can talk to girls, there's even one in my D