“Vampire Diaries” (8 p.m., The CW): Love sucks. That’s the basic message behind

“Vampire Diaries” (8 p.m., The CW): Love sucks. That’s the basic message behind “Vampire Diaries,” a new teen drama about a high school girl (Nina Dobrev) torn between two vampire brothers (Paul Wesley and Ian Somerhalder). Sounds like a bloody nightmare.