So please just know when something is wrong.
I always know when something is wrong with you.
You never know when something might click, a face might look familiar.
I was around you long enough to know when something's not right.
In some way or another we know when something is correct.
Unlike you, I know when something's over.
You never know when something sharp might fall from the sky.
You never know when something like these might come in handy.
I know when something's up, so I asked around.
You know when something feels right from within...
I know when something's troubling my little brother.
Sé cuando algo le preocupa a mi hermano pequeño.
You never know when something will help.
He always seems to know when something's important.
Siempre parece saber cuando algo es importante.