I don't think it's young for crushes at all. (DD has had crushes since 7ish. I know some kids don't have them at all till much later, but DH and I both did and DD is like us, I guess.) I think it's a bit on the young side for serious romantic interest, which is what I see developing in my daughter. I have no idea if a physical interest is there. I'm thinking no. It's more that the readiness for emotional/romantic intensity is early.
I am aware of at least two other boys who have had crushes on DD, so she seems to attract interest from the other side as well. (I don't think DD ever knew! Their moms told me.) She may be "crushable" for certain types of boys because she is interested in some "boy" things and is friendly and outgoing and happy to run around, get dirty, etc.
