I go on mumsnet from time to time but have changed my name for this. I have 3 sons, one 5, and two dts aged 3. DH went to check the boys the other night and found Ds1 in bed naked with one of his twin brothers. They said they were playing having babies in their tummies and apparently weren't touching private parts etc. My Dh called me in immediately. The next day (delicately) we suggested it was time ds1 had his own room and he seemed very excited re my suggestions re decorating it etc and just to have his own space. All fine then going away at Easter to grandparents the three boys had to share a room again and we go in to check them and find ds1 and dt1 in their beds, separately, but having taken their clothes off. they said they were playing having babies. DT 2 was asleep as before. About a week before this happened ds1 said to me that he sometimes went to cuddle dt1 in bed at night. He said it as if it were funny but I got the impression he knew it wasn't quite right and so wanted to flag it up to me. Cue a week later and it made sense. We had further chats at Easter and frankly I was relieved to get home where they now had separate rooms. But this morning we woke to find ds1 sitting in our room on his own silently (slightly odd) and dt1 down the corridor outside ds1's room with his pyjama bottoms down by his ankles. He said he'd done a poo (he hadn't) and needed his bottom wiping. We said he should come to us, we've delicately questioned and had the talk that nobody should touch the area where your swim costume is etc and your private parts are for you alone etc. A little later and ds1 whispers to dt1 in front of us, and when we asked what he said he said he'd asked dt1 to come to his room for cuddles. It was the secrecy that felt worrying. I don't really know how to handle this, we feel we've lost our bearings a bit, all behaviour seemed innocent before and now I'm seeing it differently. I feel very strongly that I need to protect dt1 and also ds1. The added fear for me is that ds1 is at a catholic primary and although all institutions involving children attract paedophiles there has been a frightening number of situations of abuse in the catholic church, although not primary schools I think? I don't want them to feel ashamed but I'm concerned that ds1 is at a different stage to dt1 (call it phallic if you like) and dt1 also is always forced into the feminised role of mummy etc. sorry If this sounds confused but i'm worried that something has been going on etc or just how to handle it as ds1 is our eldest and we've no experience re what's normal for a 5year old.