Some kind of a vampire thing. While they were walking in the woods his girlfriend was bitten by an animal which turns her to crave for blood. A girl, I think his secretary, is with them strolling in the woods and she bruise herself. He then takes care of her. This girl got hots with him making a love triangle. My memory about this movie is blur but I want to get the title desperately. I've watched it when I was young. Please help.