1 - She chooses to sit beside or across from you when there are other seats available elsewhere in the area.
2 - She greets you without you speaking to her first, especially if you are relatively stationary.
3 - She compliments you or asks your opinion on something (not male-related) without you initiating conversation.
4 - She is always smiling and/or waving at you as you pass by her.
5 - She discusses music or some other source of entertainment with you more than once and/or offers to let you borrow item regardless of whether you are greatly interested.
6 - She invites you or suggests you should go somewhere that she intends to go.
7 - She begins to spend more time around you (and only you) AND becomes more provocative in her attire.
8 - She asks for help doing something that you are fairly confident she can do independently without difficulty.
9 - She increases physical contact, brushing or leaning up against you, touching, etc. (hugs do not always count).
10 - She asks you out - this is usually a ringer (unless she has recently expressed interest in someone else and has not been out with them yet).
Watching Sixteen Candles for like the third night in a row--can't help it, it's been on VH1 for what seems all week. Brings back lotsa good memories. And I really mean that.
By the way, it's a much better movie than The Breakfast Club. I will not argue about this.