I know you're asleep but

Something a guy texts a woman at 3am, when he's most emotionally vulnerable so he can vent without fear of being judged

"I know you're asleep but I just wanted you to know that I love you lots, and I couldn't live without you"

the horses are asleep

turning up too early for something.

I turned up to work but the horses are asleep.

Asleeping

When someone is in a deep sleep

My mum is asleeping

fell asleep

1. Sleeping, usually while on a transportation ride.

2. Past tense of fall asleep.

They fell asleep part of the way.

you asleep

You just don't know, you have no idea, you're missing out.

"Have you heard that new Kendrick Lamar album?"
"No"
"Man, you asleep!"