Big Wolf on Campus (1999)

S3E2 Everybody Fang Chung Tonight

Late one night during his radio show, Merton finally meets the perfect woman—only to discover she’s a vampire. But she’s no ordinary bloodsucker; she feeds on werewolves, a species so rare she and her vampire companion are slowly starving. When they learn Tommy Dawkins is a werewolf, they manipulate Merton into being turned into a vampire. Now, to survive, he must destroy his own friend Tommy.