Is the sentiment present in the input text negative?

Input: "excited to go on a diet with iona, the rules we made up a gr8!!! givin eachother 20p if we eat something bad & sunday is watermelon day heh"
"excited to go on a diet with iona, the rules we made up a gr8!!! givin eachother 20p if we eat something bad & sunday is watermelon day heh"