My Best Friend Is a Vampire (1987)

Young student finds himself being transformed to a vampire after a night with a quite attractive female vampire. First, he does not quite believe it himself, but with the help of a 300 year old teacher and the handbook "vampirism - a guide to an alternative lifestyle", he finds out that blood does not taste as bad as he expected. Of course, he does not bite women, as a good guy he sticks to pig blood which is offered by the local butcher as a special offer for vampires. Trouble rises when a vampire hunter tries to track him down with wooden sticks and silver bullets...