I have lady/grown adult women that I think are beautiful and I might have a thing for some characters they have played. I don't know the celebrities, and I have to know someone before being interested. No mean, naive, selfish, stupid, etc people. So. Some characters? Yes. The people? I don't know them enough to say boo, much less develop a "crush" on.
I don't really use that turn of phrase for myself, either. I like adults, not girls or boys. I have interest, not a crush like a barely teenage youth.