freaking out about my sexuality

hey guys. i don’t know what’s going on with me right now. i’m 21 years old and i’ve always identified as a lesbian, but i’ve always had a fear that i’m making it up and that i’m really straight. it’s getting really serious now, where i’m starting to feel like i have attraction towards men. i really, really do not want to. the thought of having sex with a man has always grossed me out but now i’m scared i’m starting to not mind the idea. idk what the purpose of me making this post is. i just don’t want my life to look differently