>>9
Okay, so basically you fall for any girl who just so much as gives you a second glance?

If you want a pretense, then start from something small, like borrowing her liquid paper. Then depending on your relationship with her (how long you've been classmates with her) strike up a conversation regarding something that she owns. For example, if she's listening to music, pretend that you're bored and ask her what she's listening to (that will give you some indication of compatibility). Or (if you're really stuck), make mention to the weather. But that's kind of an overdone icebreaker, and she might be sassy enough to pick up on what you're doing.

Of course, making small talk with her will be much easier if you've just met her. It would've been even easier if you'd just lent her your notes..