Insatiable  (2006)

Theatrical Release Information:
Insatiable

A timid salesman tracks down a beautiful female vampire and finds himself faced with a curious crisis of conscience in this semi-romantic tale of immortal bloodlust starring Sean Patrick Flannery, Michael Beihn, and Charlotte Ayanna. Harry Balbo (Flannery) has just witnessed a brutal murder, yet no one he talks to will believe his gruesome tale of death and dismemberment. Desperate to prove himself right, Harry soon sets out to capture the bloodthirsty seductress and strike down the skeptics. But the beauty of Harry's target holds a strange power over the wannabe vampire slayer, and instead of killing the creature he locks her up in his basement for further research. What Harry doesn't seem to realize is that in order to survive a vampire needs blood, and since she's unable to attain it herself it's now up to her captor to ensure that she is well fed. Realizing the value of his find but unable to simply kill her, Harry must now decide whether to go out hunting humans, or simply stand by and watch the alluring creature dies of starvation. ~ Jason Buchanan, All Movie Guide