Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @RealestCastiel just sitting close to him for an extended period of time was exhilarating because he's so beautiful and lively lol
This tweet contains emotions: 
joy, love, optimism