Plz read I need help and y’all are great advice givers so yea...

So I basically came out to my friend (let’s call her Betty) and told here I’m bi. And I told her not to tell anyone, we made a promise and she kept it (thank god). She asked me if I liked someone and I lied BIG TIMEEEE. (Let’s just call her Sarah). So Sarah has been my best friend all my life but now things have changed ever since I considered being bi or things like that.as time went by, I suddenly started having feelings for her. This has been going on for months now and the way I feel for her is getting stronger. It’s this type of love that you stay awake all night from and that’s basically what I’m doing right now😂. I know she is straight because she’s always talking about this one boy and how she wanted to marry him😂😂. It kinda makes me cry inside every time she brings that stupid boy into the convo. To make things worse my parents don’t know anything, they never talked about sexuality with me, they just gave me “the talk” and that’s it. I’m pretty sure they’re homophobic cuz every time on TV if there is a gay couple they fast forward and gag...plz help me y’all always now what to do.

P.S I know you guys are gunna tell me to tell my parents but that’s never gunna happen sooooooo