That's a problem I've had repeatedly. The last two major crushes I've had, I never got to say anything. One of them mentioned she had a boyfriend offhandedly. Then she somehow found out I had feelings for her and ceased all contact immediately.
The one before her told me that she's gay while we were texting, which I have nothing against, but it was still unfortunate. I'm still friends with her today but she has no idea I ever had a crush on her.
I'm afraid of outright telling. At least right out of the gate. I don't like the idea of trying to build a relationship with no foundation. That's how my one and only romantic relationship started, and it was terrible.
I'm a firm believer that you'd want to be good friends before trying to go that step further.
But it also doesn't help that I haven't been able to meet a new girl in months. My school is so small that everyone knows everyone at least on some level. So there's no one in my school I think I could be in a relationship with that I haven't already talked to.
So I've been left with this vague directionless void burning and festering in my gut. Desperately calling and pinning for a feeling I can't even build falce hopes up for anymore.