I have an idea for a vampire novel, and I want opinions. If you don't like vampire novels, please dont answer!?

My main character is a girl (first person) her boyfriend was killed by a vampire. The novel starts out with this. through chance she meets another vampire. Now I know what you are all thinking - they fall in love! Wrong! This vampire lost his fiance many years ago. The twist - my main character is acutally that girl - reincarnated. She has no idea. Magic plays a big part in this novel. It will take place in the past and the present. I know this isn't much detail, but please let me know what you think....