"Betaab ho raha hai, ye dil machal machal ke
Shaayad ye raat beete, karvat badal badal ke..."
This is what happens when a million wishes are ignited in one's heart after it has fallen for someone but it knows not who that someone is; or isn't prepared to admit it to itself.
This is also what happens when you have a cold and sore throat. The discomfort experienced is the same- the mind, heart and body are restless, sleep evades you, and the night is spent tossing and turning.