Vampire Information

I want to make a story about a female vampire who meets a boy named Luke and finnds out he’s a Vampire demon and heres were i am stuck i want them to fall in love but i don’t want to be acussed of copying twilight. Can some peaple help me come up with some ideas for my story i am so stuck.

Here is a part of the story i made this is narrorated by the male:

This misguided female vampire with hooded purple eyes that are like two windows on the evening sky walked right passed me and turned into a table to my right. Curious I watched as she tossed around her long strait brunet hair while talking to her mortal friends. She didn’t look as though she was suffering from any standard vampiric disabilities like sometimes they would have red eyes though purple didn’t help her human discise either. And as she took a big bite out of her sandwich it let me know that she still had a appetite. And though I should be planing the right moment to dispose of her before she could get to me I just stared at her wishing I could know more things about her like if she was single or if she had the same feelings for me too. Anything but how this beautiful creature prevented me from doing my job.