Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: You know you're in love when all you can do is smile whenever you talk about how he is to someone.
This tweet contains emotions: 
joy, love, optimism