just want to feel in love with my person like before

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

maybe i dont want to accept the factvthat i lost feelings, maybe i never actually loved my boyfriend and i hust wanted a relationship , i dont want reasurance, but in very scared i dont love him, because it feels real. im scared

i feel so bad for posting here, idk what i wamt i have so many thoughts abt the feelings i have for my bf im scared my thughts are true or that they will be true and i feel bad for feeling amd thinking this way i such a bad girlfriend, i am scared that i like other people just because i look at them or talk to them normally and i feel like a liar what cam i do to stop feeling like this i am scared