How can i stop being jealous over his celebrity crush?

You really should stop worrying. Celebrity crushes are completely different from the love a boy has for his girlfriend...Celebrity crushes aren't based on love, only fondness. He will always chose you over here.. It's natural that you feel this way but you really need to understand that there is no reason to be jealous or insecure at all. Also, don't try and compare yourself to her and don't feel as though you are not good enough cause thats not true. its just a stage all boyss go through, my bf is obesseed with carrie underwood but hes never going to get her :p so dont worry girl confidence is everything. hope i helped.. good luck