Back to boy-girl attractions rather than genital explorations.

My daughter had a boy suitor who was hopelessly in love with her in kindergarten. The kindergarten teacher told me that everybody knew that Alex was in love with Julia, and when I explained to the boy teacher that Julia felt that he violated her space by following her everywhere, the kindergarten teacher got them together and explained to Alex that he needed to give Julia space.

When she was about 2-3 and quite shy, a lovely boy her age kissed her. Just to preempt the possible explanation (that I can foresee coming out of this thread) that the overly hypersexualized American culture influenced the little boy and he kissed Julia because of the influence of the hypersexualized American culture... the boy's father was a Russian Orthodox priest who had a parish in Silicon Valley, the priest's wife had a PhD in Slavics from USC, they led a very ascetic lifestyle and I am absolutely sure that there was no TV and not even a tiny morsel of the influence of the hypersexualized American culture in their household.