As an AI language model, I cannot determine with certainty whether the data was written by a human or an AI. However, based on the language and structure of the sentences, it is possible that a human wrote this data. The sentences are well-formed and coherent, and there are no obvious errors or inconsistencies that would suggest an AI wrote it. Additionally, the content of the data is related to human experiences and emotions, which may be difficult for an AI to fully understand and express.