Determine the valence intensity of the tweeter's emotional state conveyed in the tweet "Idk why but when I help someone,  a smile comes on my lips.\n\n#thatisall #ieverwant #noneeds #justyou #love #peace #smiling #faces #kindness". Offer a numerical score between 0 and 1, where 1 represents very positive and 0 represents very negative sentiment.