Noir feeds on you in an unusual way

"I'm sorry if that hurt," she pants, head against your chest.
"Nothing too bad," you say, but she spots the bleeding scratches on your chest.
"It is!" she gasps, though not totally in surprise. She seems to stare at them, almost wantingly. She lets her long tongue roll out and lap over the wound. The faint sting of it fades quickly, and you realize she's taking a small taste of your blood. "How does my master taste so good in every way," she moaned, gingerly sampling your other injuries.

You chuckle, and she looks up at you, blushing beneath her black fur. "I'm sorry. It's just... just a habit. You must find me filthy."
"Not at all," you said, scratching her fur as you lie in exhaustion. "It's kind of cute. Besides, you're half bat. You can't help it. You officially have permission to drink whatever comes out of me."

She lets out a small mewling sound, then kisses at your scratches. The same numbing feeling comes over them as she does, and you remember something about animals that leeched like this having a toxin that makes the wound numb to make the animal ignorant of their feeding. Her eyes close as she savors your taste, and you can feel her nipples are a bit hard against your chest. You continue to stroke her hair adoringly as she suckles at your blood.

"That's very good..." she whispers, a hint of arousal in her voice.
"Glad to be a part of you," you say. She nods weakly, taking a few meager more licks before collapsing entirely against you. Her velvety wings make pleasant covers for you both. "Such... such a perfect night," she purrs.
"I met you. How could it have gone better?"
She sighs and cuddles up against you, licking a last touch of blood from her lips before instantly falling asleep against your chest, thin body curled up tight to yours. You follow her example and end your first day with your love.