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: @Za_buhmaid Happy birthday sweety .. sweet 21 hun hope u have a wonderful day and a wondrful joyful year better than the last one, Luv U ♥
0.950