How do I get this guy to nitice me ?

Walk up to him, stop in front of him, look him in the eye, don't say a word, smile "knowingly", then finally move on... still smiling. Be sure to look back over your shoulder as you walk away.

You can try bumping into him,(make sure you have books
Or something in your hand )make your books fall to the floor. He will probably help pick up your books and bamm the converstations will begin!