Hello hippaforalkus: I noticed this is your first post here on PC. So... welcome to PsychCentral.

I'm sorry I don't really know what to tell you about this. I know I've had a few experiences of this sort over the years. In my case, though, my "obsession" with a movie or character faded over the course of a day or two. I don't know how long this has been going on with you. Actually this experience doesn't seem to be all that uncommon. Here are links to 3 similar threads, along with their replies, that were posted here on PC:

Falling In Love With A Fictional Character...

I'm deeply in love with a cartoon character

I'm deeply in love with a cartoon character

And then here are links to some articles, from PsychCentral's archives, on how to let go of stuck thoughts as well as how to stop obsessing. Perhaps there will be some suggestions in these articles that will be of some help:

9 Ways to Let Go of Stuck Thoughts

7 Ways to Stop Obsessing

https://psychcentral.com/blog/some-i...dium=popular17

https://psychcentral.com/blog/why-ca...dium=popular17

I hope you find PC to be of benefit.