Anxious tiktok

I feel so sad, alone, scared and hopeless. Until two months ago there was not even the remote possibility of being anything other than heterosexual and now the idea that I could find out that I was lesbian or bisexual terrifies me to death. Everything was born from the fact that I didn't feel sexual desire towards my ex-boyfriend and I started to be afraid that it was because I was a lesbian... how can I be a lesbian or bisexual if everything was born from this? I would like to run away from myself and my head. I would really like to go back and go back to my life before. I can't take it anymore. I just want to live my life like before

I am a 21(female). I have only ever kissed one guy and it was horrible and I cried after. I stress about my sexuality constantly. I only want to be straight and know I want to end up with a man, but picturing it stressed me out and I am so scared to kiss a guy I think about it and get so stressed and cry immediately. I have severe intrusive thoughts about kissing everyone my teachers my best friends and it creeps me out and then I go down a rabbit hole of sexual orientation ocd! If anyone has any tips that might help that would be great. Again I don’t want or think I am gay but being so scared to be intimate with a man starts me down a spiral.

So I identify as a lesbian and I am in a committed relationship with a wonderful girl. But i’m stressing that I have crushes on boys I go to school with. I get anxious around them, which I think I mistake for excitement. I obsess over it in my head which confuses me a lot. Idk I also never think about them sexually or romantically but I think about them often which is scaring me. Any advice?