my 5 year old so... touched my friends daughter

my 5 year old so... touched my friends daughter.
They were playing together in the cubby house today. My friend went down to check on them.
My son had her daughter over his lap with her pants pulled down, kissing her bottom.
He has told us he also kissed her on the lips and on the "wee"

I dont know how to react...... I dont know what to say

I cant stop crying.

He has never done anything like this before.

[leah5326]

there is nothing to cry about it is normal your son dont know what he is doing dont make abig deal about it all kids do this kinda thing some start sooner than others but they all do it he just experimenting so dont worry

[Lisa186]

Try not to stress your self over this too much, but i think you need to talk to your son, ask him why he's doing it, and explain to him that this is not normal behaviour, and that he shouldnt be doing it, but also try not to get angry with him as he doesnt no it's wrong. I think he's too young at the moment to be going thru the ''experimental'' stage. Best wishes lisa.

[RockRose]

How old was the girl involved?  

When you have one child who is naked,  and one who is fully clothed,  and they're both the same age it's very likely the naked one was the one who initiated the play.  Especially if you're right that your son has never done this before.

I agree with the others.  This is normal exploration.  But he needs to know that this behavior makes adults really really upset and he should keep his hands and lips to himself in the future.