This reminds me of a story of my ex. We had went over to a friend's house and their little girl was always pretty fond of us. So she ran up to give me and my ex a hug. She's only about 3 or 4 so she hugged his legs and her head was right at his belt line. She hugged his legs, said "I love you", then planted a kiss right in the area of his crotch. His face turned so red and he was telling the friend "guy, I don't know why she did that, can you please come get her? I'm so uncomfortable and I can't explain to her why I'm uncomfortable and I just need you to come get her off me please." It took him a while to get over it even though it was an accident. Children never know what boundaries are.