She's been staring wide-eyed at you from across the cafeteria for ages, she laughs at your corniest jokes, and dresses up when you're around. But is it the real thing? Has she really fallen for your handsome locks and killer eyes?
She stops biting her nails, adjusting her bra straps, and generally looking stupid when you walk into the room.
This is obvious. She won't want to look like a fool if the man of her dreams is in the vicinity, so she'll be making an effort to get her act together and be a lady.
She laughs at your jokes.
If she cracks up at the slightest pun you make, then you are one lucky guy! Girls love to laugh, so if you can make her smile, you're the one for her.
She blushes red as soon as you turn to her.
A good sign. She doesn't want to make a fool of herself or say anything stupid - especially when Prince Charming is right there!
She frowns or turns away when you talk to another girl.
No one likes to see the one they love with someone else, can't you see it's killing her? Drop the other girl now and you'll be alright.
She comes to talk to you when you're alone.
This may be scary or annoying, but girls like to catch their crushes alone so they can talk and get to know you better without the pressure of curious stares from others. Take this opportunity to question her about the way she feels, you might just find you feel the same.