I caught my son humping his pillow in his room

[CountryMama3]

Few weeks ago my boyfriend and I heard a thump down the hallway towards the kids rooms.  He went into my sons and found him on the floor.  He asked what he was doing, to sim it up he told him he was humping pillow.  Just this morning I went into his room to get him to go be with his 4 month old sister and he was in bed with a pillow under him and blanket over him.  I asked what he was doing and he kept lying so I shut the door and told him to stand up.  He did his undies were at his ankles and everything was at "full attention". I did fuss at him because it wasn't his pillow it was one that everyone has used.  Recently he has wanted to me to show him how to change both his sisters diapers, when I breastfeed he is always trying to be close and look,  and when I get out of shower that's when he comes out and just openes my door, he has been trying to come in bathroom as well when bathing his 2 year old sister.  Should I be worried leaving him in room with my girls? I understand that he is a growing boy but to be like towards his sisters is absolutely unacceptable and will not be tolerated in my house. My real father made some comments to me and still does if I was to contact him and it's wrong and a sin.  What do I do and how do you come out and talk to your child that we do not look at our siblings like that. He is my first child and saved me from a bad road of life and changed me. It breaks my heart that he is going through this already and especially not having a daddy to talk to him.  I figured if my boyfriend has a talk with him it would be ALOT better and less embarrassing  than coming from mama.  My boyfriend has known him since he was 1 1/2 years old. Please help me. My baby is becoming a young man.  

[Sandman2]

Knowing how old he is ...is important.  Please let us know.

[humanzoe123]

I think both you and your boyfriend should have a talk with him together, explain to him why we don't do that and let him ask all the questions he needs to. if the situation advances, calls should be made, and punishments established. How old is he?