No arousal to opposite sex but I have it to same sex this can’t be ocd anyone got any knowledge on this please

I’m 25 and never ever thought this before my soocd relapse. I have a bf of 5 years. Never been a high libido kinda girl. Don’t get me wrong I do get turned on by my bf but not like every day you know? - That had always been in the back of my head, is this normal and ok? But my ocd has latched onto the most scariest what if EVER. My brain is now saying How do you know you won’t prefer to sleep and kiss girls if you haven’t tried it: and it’s that unknown that is scaring the shit out of me. I DONT AND NEVER HAVE wanted to sleep / kiss a girl. But now my intrusive thoughts is all I think about!!! I don’t want I don’t want I don’t want??? So why does my brain think BUT WHAT IF??? I know ocd thrives off uncertainty which is why I think this is happening? But I don’t wanna find out or work it out because all I want is to be with my bf and marry him!! Is this just the epitome of OCD?

Sorry long post. Anyone feel like now they’re just in extreme denial. Like when I was little I noticed guys more than girls in movies and was more drawn to them. I remember changing my mindset to switch that. 98%of my life has been straight until recently. I felt drawn to some guys but never thought of it sexually. Always had girl crushes dreams and porn. Now I watch porn and I feel like straight takes longer and then I go and watch gay porn and feel nothing until I tell myself it’s two attractive dudes and love is love and imagine physical sensations and then it hits like suddenly. Like I have to convince myself it’s alright. Then when I try again I can do all that but feel nothing and then straight porn works. Idk if it’s just getting a fix or the first time works with anything or what but it’s confusing. On top of that I’ve felt girl relationships including my wife maybe miss something and a guy maybe matches that feeling that but then I feel like I’d be missing something without a girl or my wife. Idk I’ve had some rough times in life with male figures in my life but idk. I feel like I have to convince myself more and more that I’m straight even more than the first time I dealt with this. Can someone relate? Please

I’ve completely lost myself. I can’t focus on my studies, I can’t go to the gym. Dang it I can’t even be around my male friends normally anymore. I got no idea why or how this happened but the only thing I know for sure is that I never questioned my sexuality neither doubted it. I never cared in general. I just liked girls. I keep testing and keep testing and keep testing my arousal but no matter how many times I see but I don’t feel the same way for guys that I do with girls my mind will always try to make me believe that I am gay. It’s like it’s forcing me into an identity I never asked for. But at the end of the day like my psychologist told me. Sexuality doesn’t change. So since I never felt anything for guys in my life it’s ocd. I’ve been up and down for 5 months now and while the last week I was feeling way better. Monday now and I’m back to zero. I just want to go back when everything was normal. I can’t keep living with this.