Playing hard to get at age 2?

Those who spend time around Jadyn see that she's normally an extrovert. She often calls out the names of people she approaches even before she reaches them and waves to strangers. But her interactions with non-related men can only be described as intermittent. Sometimes, she'll pull away when a man approaches or won't call out the person's name. Sure, we want her to remain safe in her interactions with the opposite sex but we still want her to be friendly with those who mean her no harm. So, I guess we'll just have to teach her that it's rude not to nice to people are just trying to be nice to you.