Buffy and Angel, Buffy the Vampire Slayer: Buffy and Angel showed us that love truly knows no boundaries — not age difference, lifestyle difference (the guy sleeps during the day, for crying out loud), or even species difference. The whole vampire and human thing never stopped them. It kind of made it hotter. But we digress . . . Angel and Buffy taught us to let ourselves love who we love, even if the odds are against us. Even though they didn't technically end up together, it was always implied that they were each other's one and only (sorry, Spike!).