Pinkie screamed as she witnessed the scene before her. Rarity's vampire fangs planted in Twilight's exposed neck. The unicorn pulled her face away, blushing as she wiped away the excess blood from her mouth.
"I couldn't help it, Pinkie! It's not my fault I have to feed to survive! Don't be afraid, darling."
Pinkie's expression softened. "Phew. I thought you had killed her!"
Twilight sat up, smiling weakly. "I'm fine, Pinkie. I allowed her to drink because she was worried about this whole vampire thing." She laughed.
Rarity blushed. "And we, well, we kissed.. Don't tell the others, please!" She pleaded.
Pinkie smiled. "Cross my heart, hope to fly, stick a cupcake in my eye!" she recited, giggling.
Everypony in the room had a laugh.
"Can Spike come in? He's moping outside.." Pinkie questioned, tilting her head.
Twilight blushed. "Yeah.. Let him in."
Pinki opened the door. "You can come in, Spike!"
Spike walked in, sitting. "Can Twilight tell me what's going on here?"
Twilight sighed. "Rarity is a vampire, and she and I are together since she fed on my blood so she could become full-fledged." She explained.
Spike nodded. "I see."
Pinkie bounced. "Rarity and Twilight, sitting in a tree, K-I-S-S-I-N-G!" She sang.
Spike clapped to the beat, while the two mares in question just sat and blushed madly. All of a sudden, Rarity collapsed to the ground.
"Baby!" Twilight screamed.
Everypony surrounded her, panicking.
---------------
"W-Where am I, darlings?" Rarity asked, a few hours later when she had finally awoken.
Twilight smiled so happily. "Rarity, you're awake! You're in Ponyville Hospital, dearest. You collapsed."
Rarity looked around blearily. "I'm still hungry...."
Twilight gasped. "You didn't drink enough of my blood? That's not good." she muttered. She moved her head towards Rarity. "Drink some more."
Rarity teared up, shaking her head. "I-I can't! I don't want to hurt you!"
Twilight kissed Rarity's lips immediately. After she pulled away, she smiled. "It doesn't hurt me. I promise. Just go ahead. You need to drink to survive."
Rarity nodded, hesitantly sinking her fangs into Twilight's neck once again.
Just then, the nurse trotted in and screamed.