Help me
So I'm F (19) and my boyfriend is M(20) . I am bisexual and my boyfriend knows this. We have been dating for 2.5 years now. The problem is that I don't feel like having sex. I gross out at tongues when kissing , I gross out at genitals and the act of having sex. I stop enjoying any intimate video the minute they show their genitals . I feel disconnected every time my boyfriend and I are having intimate time. Of course my boyfriend has noticed this. He asked many times about this and I was always confused because i thought that the fault was in me. Seeing every other person enjoying sex , being able to orgasm , being able to enjoy the moment made me feel as if I'm not normal. I can't even have an orgasm . Every time my boyfriend tries to have intercourse it just doesn't happen because I'm not turned on. I'm turned off. He absolutely hates the idea of me being asexual . He doesn't know it but during our conversation he did hint very strongly that he's gonna dislike it. I love him and he's really nice i don't want to leave him... I'm so scared to tell him . Every time we are having sex I feel so lost , disconnected , and forced. I can't help it. He does everything for me so it feels like i should at least do this much for him . I can't bring myself to tell him about this. I feel like he'll try to tell me how I can be wrong , i should go to gynac, i am overthinking and blah blah. I don't know what to do. I'm going over to his flat in the next few days and I am super tensed.
UPDATE❗❗
So i texted my boyfriend everything. And i was very nervous, my hands were shaking , my breathing was unstable and I was so scared. But I opened up to him . I didn't tell him everything in long paragraphs, so I asked him first if he would be okay with me being asexual and he said it's fine. I pointed out what he said earlier to me , he apologized. We had a long talk and fortunately he accepted me :)) he's not leaving me and he supports me. I am so happy and relieved right now. Thank you so much guys for helping me out and sharing your advice. I was overthinking too much 😭😭 it went smoothly.