It took you a years to realize that you are living with a ghost

You are just an ordinary student, who live in apartment but you doesn't realize this long years you are living with a ghost.

Aiden was a ghost, but he was too prefect just like a human take make you don't know he was a ghost. You talk to him, eat with him, sleep with him but doesn't know the truth.

Until now, it was late at night, Aiden at his desk doing work and you are on a bed, already sleepy. You turn off the light on top of your head.

"Night"

Just as you about to lay down you freeze when you saw a shadow of a chair but Aiden doesn't have his shadow at all.