feeling stuck

I know the solution is to always say “yeah that could be true, but I am choosing to live my life anyway.” However, I feel like my biggest issue is my brain always assuming that it is immediately true when I do that. Like if I say “maybe I’m attracted to teenagers, it’s possible,” then my brain INSTANTLY starts rationalizing that thought and defending it and being like “oh okay so you think this now and it makes sense because xyz, and now that’s who you are and your real desire is now and always will be teenagers.” I feel really alone in this area of feeling like my brain “accepting the thoughts” means my brain immediately accepts them as true. I obviously don’t want to think they’re true but I feel so stuck now.

I had a really bad nightmare revolving around one of my big themes and I woke up with the panic still left over the dream as if it was real and I kept thinking about the situations. I tried to tell myself it was just a dream, but then it made me question real life. So then it was a cycle of ruminating about the events as though they were real and my reality which really messed me up bc my biggest theme right now is becoming schizophrenic/catatonic/"crazy." I feel stuck in a loop, I've tried saying the "maybes" and even talking to my partner about other things but it just keeps looping in my head "am I crazy?" "I can't differentiate between dreams" "I feel like I'm stuck in my head and I can't even talk". Any tips? I feel like I'm at the crescendo of my 20 years (lifelong) ocd due to stress from moving soon.

So been trying to do erp with my therapist for a while now, and tis really hard and feels like it's not working. Il get this weird sensation or feeling that makes me feel"gay" or as if I'm attracted to someone, and I know my therapist keeps telling me" you don't have to put meaning into the thoughts or feelings" but that seems impossible to do because and I'm sorry to say, it makes me feel that specific way. And I'll use the Erp quotes, "maybe maybe not" or"the more I struggle, the worse it gets" or"these feelings and thoughts are here, but I'm choosing to let them be" and I'll do nothing and try to let it be here but it's so distracting and feels very real, and it's like this sensation, small or big and it last all day, and even just sitting with it isn't working. And my therapist will tell me"you don't have to believe in it" and I'm sorry I feel like if it were that easy, OCD would have never been a problem in the first place, or live with uncertainty, however it doesn't feel like uncertainty, but feels very truthful or valid. Idk what I'm doing wrong tho