Seeking Advice on Fixations with ASD or OCD

Hi! :) I really would like to talk to someone with either ASD or OCD about fixations - or more specifically fixations on real life people. I am officially diagnosed with ASD, but I am considering that I may have comorbid OCD for several reasons. Regardless, I have a very difficult time whenever I form a fixation around someone, because of how intensely focused I am on them… and I often grow obsessed and have horrible intrusive thoughts that I spend hours trying to get rid of/aim all my attention towards! I know that this was a very vague description, but I would really like to talk to someone who has gone through a similar situation! Or if anyone has any sort of advice/tips they would be greatly appreciated! Thanks so much :)