I read an article on this a little while ago and the conclusion seemed to be that these celebrity "crushes" are harmless and may even have some positives. After time, they diminish, and before that, can be a source of harmless fun. I hesitate to admit it, but I had a secret crush on a celebrity at one time. I hesitate because I'm embarrassed about it! That is why I kept it more or less secret. My close friends did not know, but my family did. It was harmless and fun. I still like this celebrity but am not "obsessed" anymore. It ran its course, just like any other crush. I did make some friends who had the same crush and that was a positive for me. I never had any illusions that this celebrity would ever reciprocate my crush. Just worship from afar.