Every Bite You Take by Lisa Carlisle

I pulled the door open and stopped dead.
Alone in the hallway stood Damien just a few feet away. His head was tilted back as he downed a blood bag pressed to his lips.
Eww…
He jolted upright and opened his eyes, pinning them on me with a horrified expression—which must have mirrored my own.
We froze, staring at each other for an excruciatingly long second before he jerked back and tightened his clutch on the bag. A spray of red arced my way.
“Oh no—” he muttered.
A strange yelp escaped me as I stumbled backward into the closed bathroom door, just as the blood hit my cheek. It was warm and gooey and utterly disgusting.
“Yech!” I flapped my arms like a duck, desperate to get the blood off me.