My brain keeps telling me that I have crushes on fictional women from a very early age and I feel like that was true but I never really wanted to do anything with that info

Why are things so real the first time they’re in my mind and then when I think about it later it’s easier for me to be like wtf?? I was watching a movie earlier and the young girl had developed more in the chest area than the last movie and I felt the desire to check her out so I did. Then later I let myself imagine her having sex and I liked it. But now looking back I’m like ew. The boys in the movie have also developed as the movie went on and I couldn’t help but think that in their real life they’ve probably woken up to boners and s*men and stuff. And looking back it’s just ugh. Idk if it’s sexual relevance but I genuinely let myself indulge in these thoughts and groinal responses and I remember thinking to myself I don’t want to be attracted to little kids and how do I stop myself (everyone has attractive qualities so in younger boys I see man like qualities). Idk I need help. I wouldn’t type this out if I truly believe I was messed up but I’m still scared

So I was fantasizing about my crush and when I was into my brother pops up or something and it makes me think I was turned on by him like I’m upset about that now

As I’ve posted before, my friends has developed TOUGH hocd and has hit rock bottom :// She told me to ask y’all here if any of you have had a similar experience NOT reassurance (she doesn’t have NOCD). “Hi NOCD community. When I was like 5 I had this distant female cousin whom I played with and grew up. She had super short hair like a boy, but we low key had same interests in toys/tv series etc. and then at THAT age I got a very weird though which said: do you like her? And I remember getting a lot of anxiety and my stomach hurting cause why tf would I have that kind of thought about my female cousin? I remember ruminating about it the whole day, and the next day that thought disappeared and I never had that thought again. We grew up and obviously she’s my family like my sister. But now that I have HOCD, I keep thinking about that memory and I have so much anxiety about it and cry often about it. While growing up I’ve only had crushes on tons of boys at school etc. has anyone had a similar experience?” Thanks for reading if u did! We need support 😭🙏🏻