Lovesick, emotionally unstable, obsessive, angry, hateful, close-minded, scary, murderous, clingy, annoying, selfish, mean, hypocritical, immature, insensitive, aggressive, deceptive, vengeful, crazy, twisted, possessive, devoted, dedicated, loyal, lovestruck, dramatic, controlling, authoritarian, manipulative, violent, resentful, unforgiving, overprotective, insane, psychotic, evil, cruel, sinister, dark, sadistic, extreme, intense.