Only two things don't let someone sleep whole night, Insomnia and Love; and I'm not sure about the insomnia.

The worst thing about getting your heart broken is going to sleep and knowing you're going to wake up and nothing has changed

When I am with you, we stay up all night.
When you're not here, I can't go to sleep.

Praise God for those two insomnias!
And the difference between them.

Sometimes the mind silence the heart, cause it is afraid of what it might say...

If thou wilt ease thine heart / Of love and all its smart, / Then sleep, dear, sleep.

His heart glowed like a thousand fireflies lighting up a still autumn night. He was a lucid light in an indistinct clouded world.