Vampires are Hungry for blood.
This is a simple, straightforward fact, and yet somehow humans find ways to downplay or excuse this, when they are not busy villainizing it. (A somewhat rarer thing in these progressive modern times, but unfortunately still too common for comfort.) In some particularly baffling cases, they even forget about it altogether, which is almost insulting. Sure, that Hunger is satiable, the same as any other creature, and vampires have a uniquely well-paced metabolism that permits half a pint of blood to last them approximately one month. During that time, they are quite agreeable creatures, really. But when that Hunger returns, it is a deep, gnawing, ravenous thing that can drive them mad if not satisfied in time. It is something that must be tracked, accounted for, safeguards put in place around. Even when safely pushed to the back of their mind, that Hunger is what defines a vampire's existence.
Vampires cannot feed upon other vampires.
Well, if one were to be overly technical, it is entirely well within possibility for a vampire to latch onto another vampire's neck, bite in deep until fangs find veins, and drain the precious liquid flowing within. Entirely possible, yet entirely pointless. They would gain no sustenance from doing so, and likely earn themselves a hearty slap for their efforts, to boot. Blood runs through a vampire's veins, but it is not human blood. Only human blood can satisfy their Hunger.
Vampires do not distinguish between prey and lovers.
The primary source of literature's litany of "forbidden" romances between humans and vampires is the vampires themselves. Perhaps it is forbidden from the human perspective, but to a vampire, the practice is nothing but encouraged. Find a human who will love you unconditionally, and feed you unconditionally when the Hunger comes, and treat them with loving adoration and outmost care, and you will never need to beg or hunt or fear for your sanity. (The ability to procreate is not unwelcome, either, with the children almost guaranteed to be vampires as well.) For all the historical difficulty of finding such a partner, anyone would be a fool not to try.
This is the way the world works. Vampires feel Hunger, they cannot satisfy that Hunger with each other, and so they seek sustenance and romance alike from humans.
...Yet you...
do not care.
What Is Your Name?
> Write-In
You, a young feminine creature of the night, have fallen in love with another vampire girl. Despite the multitude of attractive humans at the high school you both attended, you have long known you had no interest in boys, and despite your best efforts with the girls, nothing ever quite clicked. You took bites where you could, when they offered, but there was a certain guilt in being fed by feelings you couldn't return. The stale, expired blood bags you usually subsist on are almost preferable to that. Best not to lead them on. But when you finally gave up on trying, quietly consigned yourself to a dull, loveless life feeding on expired dregs of unused hospital rations, you looked up and noticed what had been in front of you all along:
her.
Fortunately, you are quite certain that she is into girls as well. Unfortunately, she seems no less focused on humans than you were, and more successfully so at that. Watching her bury her face in another girl's neck during the night class/day class changeover hurt, but it was expected. This is what vampires are meant to do, after all, right? So, it was back to the blood bags and depression.
Except now high school is over, and you are about to enter a university of higher education - the same one as her, in fact. At first, after discovering this fact, you were tempted to transfer to your second-choice option, the only other place that had accepted your application, just to spare yourself the heartache. But no, you decided, surely you could be reasonable and mature about this, move on and be able to share the same location with her for another four years, without bursting into tears or doing something stupid and dramatic. (Also, it was far, far too late in the process to cancel your enrollment by the time you found out, and after how much it cost, your parents were sure to stake you if you tried to back out now, let alone over some foolish same-species crush.)
And then you learned that despite all odds, she is currently single. Maybe, just maybe, you still have a chance. You just hope no other human will come along to snatch her up before you can take it.
~~~ /|\^;-;^/|\ ~~~
What Kind Of Vampire Are You?
> [You] Midnight Shadow (You are the very embodiment of a model vampire; tall, dark, moody, and one very handsome lady. Or maybe you are just a bit of a shut-in, depending on who gets asked. Either way, you melt into the shadows with ease, both figuratively and literally, and it makes it easy to watch your love from a safe distance. If you do not want to get accused of stalking, though, you will have to step out into the light sooner or later...)
> [You] Brown Bat (You are a modest young girl, in many ways. You look plain, keep your head down, and neither fail nor excel in most classes... or your life in general, really. However, what you are is a damn good flier, and you spend every moment on the ground yearning for the chance to take to the skies and stretch your wings once more. You can only hope she sees you soaring.)
> [You] Porcelain Doll (You are a petite little thing, pale and fragile and ohh so full of rage at the way nobody takes you seriously. You almost hate that you actually love lolita fashion as much as you do. You may be small, but you are determined to make sure nobody can underestimate you again - and that maybe, she can notice more than just how (admittedly very) cute you are.)
> [You] Blonde Goth (You have it all. The twintails. The fishnets. The plaid miniskirt and cute crop top. The excessive crosses everywhere to spit in the face of centuries of superstition. The love of the macabre and unflappably peppy attitude. You may look like some try-hard, but you just like to think of it as embracing the aesthetic in your own fun way. You just want her to embrace you, too.)
> [You] Raving Red (In hindsight, this latest oddity of yours only makes sense. Due to events everyone still refuses to explain to you in full, on your thirteenth birthday, you were taken by the Hunger, and went unfed long enough to slip into a frenzied madness. You... hurt a lot of people, and the only reason you still walk free is thanks to the Vampire Amnesty Act. But despite doing your best to pretend to live a normal life since then, what you have not told anyone... is that the madness never really went away. So of course, even with the Hunger gnawing at you so much more insistently than anyone else, only you would be crazy enough to just ignore it and fall for another vampire.)
> [You] Eccentric Lime (Are you even a vampire? You do not look like one, you do not dress like one, you certainly do not act like one. You are a silly little outlier, and perfectly content with that, but your pointy ears and fangs and Hunger are very much real. As is the way your knees turn to jelly when she's around. Maybe that is why you are weird enough to fall for her in the first place.)
~~~ /|\^;-;^/|\ ~~~
What Kind Is She? (Cannot Be Same As Above)
> [Her] Midnight Shadow (Tall, dark, brooding, and handsome for a lady. As the very model of a vampire, and more importantly, just plain gorgeous, is it any wonder you fell for her? She keeps to herself a lot of the time, and seems to enjoy lurking, but surely you can bring her out of her shell.)
> [Her] Brown Bat (She may be the kind of girl who fades into the background a lot of the time, but you had always noticed her, even before you truly noticed her. She is more than lovely just the way she is, and you want to appreciate that -and make sure she does too- for the rest of your life.)
> [Her] Porcelain Doll (She is so, so CUTE! Certainly, you would never dare tell her that to her face, since her anger is truly a sight to behold, but that does not make it any less true. You would treat her better than just some fragile doll, but you can still appreciate adorableness when you see it.)
> [Her] Blonde Goth (You spend every day in awe of her self-confidence, cheery attitude, and unabashedly ridiculous dedication to putting as many crosses on her outfit as she can possibly fit. But really, at the end of the day it is mainly her genuinely wonderful personality that won you over.)
> [Her] Raving Red (You have heard things about her. That she is dangerous. A victim. An injustice, whether that be what happened to her or her freedom after. You do at least know for yourself that she is... a little off. She can be a bit intense, sometimes. But she is incredibly hot, and... you like intense.)
> [Her] Eccentric Lime (She is about as un-vampire-like as a vampire can get, and maybe it is because of that that you fell for her. She is more interesting than any humans you know, but neither is she a stereotype. And she is really funny! Maybe your feelings need no more justification than that.)