Here's a few ways we use the word kilig -
When you're watching a Koreanovela and you see your favorite couple exchange meaningful glances... I'm so kilig!
When you bump into your crush and he gives you a big smile...
When you tell your friend about the big smile your crush gave you, your friend says...
Kinilig ka naman!
Signs a person is kinikilig -
The shoulder shake (much like when you pee...)
Surreptitious dimple showing...
You're eyes disappear