Determine the valence intensity of the following tweet, considering the mental state of the author. Assign a real number between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Tweet: HAPPY BIRTHDAY TO THE PANDERIFIC PANDA IK.@TheOrionSound I hope you have an amazing day Oli i love u so much and i ❤️ur vids they make me 😃