Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified 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