I was told today this gay kid in my school likes me (I'm straight) and I'm freaking out over it

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’ve talked to a couple of gay people and they all told me the same thing. They ALWAYS knew they liked guys and they have ever gotten aroused by a woman in their life. In fact they told me that they always found a woman’s body disgusting. Looking back in my life I’ve been attracted to girls for as long as I can remember even before puberty. All my fantasies were about girls and I can’t remember a time where I felt the same for a guy (because it never happened). At the end I can still get aroused by women and you can clearly see how much stupid this obsession about being gay is. Gay people can’t get instinctively aroused by a woman and like it. Groinal responses and sensations don’t mean anything because they simply do not bring joy or a feeling of desire. Instead they bring panic. I once got a groinal when “testing my reactions” and I was sitting there crying like my life is over. That’s not how genuine attraction works and no one has woken up one day feeling different and no one has been secretly gay and never noticed it and spent his whole life into women instead.

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?