What genre would my novel fall under?

I'm nearly at the point of sending queries out to agents and I have absolutely no idea what genre my novel would fall under. In my opinion, the best fit would be Paranormal Romance, but the only place that seems to be a recognized genre is the shelves of Barnes and Noble. It has horror, fantasy and romance elements, but isn't strictly any of those genres and I haven't seen a single writing sharing site or agency where Paranormal Romance exists.
Added (1). Here's the description if it'll help:

If you were given the choice to end yourself and cease your suffering or to continue fighting for an eternal life filled with love, which one would you choose?

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Added (2). Rose Amour, a misunderstood teenage girl with secrets encased deep inside her, relinquishes all prospects of a tranquil existence. An ever haunting, battered childhood leaves her high and dry with the exception of a bleak outlook of the future until a particular boy slinking around town catches her attention immediately: Gregory Catalin, who holds the ultimate Power, Power that has long been yearned for by those with the most malevolent intentions.
Added (3). He is the mysterious, enticing boy hiding behind a head of hair, the one who seems extremely unapproachable and distant, the guy with those piercing, ice blue eyes that seem as if they could gaze into the depths of your soul and hold your stare for all eternity. At once, he is intimidating, yet alluring, but blind to the internal beast that can be awoken by an immensely desired perennial.
Added (4). With his unpredictable nature and a weapon once thought to be an object of lore, Gregory knows that anyone who ventures into his vicinity will remain at great risk. Nonetheless, Rose becomes drawn to him like flies to honey. With one glance from this strange misfit, she is determined to get to the bottom of who he is.
Added (5). She wants him. She longs for him day and night. She needs him. If and when she is successful in obtaining him, will she be able to hold on to her prize, or will the forces of darkness be too much to handle? For better or worse, she'll stop at nothing to have him-even if the fragile core of her heart never ceases to beat.
Added (6). (I'm aware this this may seem like a YA novel based on the description, but it is far from. There is extensive and graphic sex, foul language, drug/alcohol reference, gore, abuse, etc.)

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