Task: Categorize the tweet into an intensity level of the specified emotion E, representing the mental state of the tweeter. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: @WhiskurMew Happy birthday, beautiful! I hope today is as lovely, wonderful, and astounding as you are!! You deserve no less than that! 😊🎉🎂💞
Emotion: joy
Intensity class: 