Had a fantastic time with a fantastic friend and her presumably fantastic boyfriend.

And it’s time to get super depressed. This happens nearly every time I have a good time, and I’m starting to wonder. Is it because subconsciously I’m punishing myself for having fun? Is it that it’s happened so often it’s become a self-fulfilling prophecy? Or is it maybe just my normal depression, but it seems worse because of the contrast with a brief brush with normalcy?