My FIL normally lives abroad but due to visa issues he's been back for a few months. I have a 4 year old and a 3 month old. In the last few months FIL has visited and stayed over 2 weekends, the third being this weekend coming. Before he came back to the UK, I asked my partner not to invite him to stay as I would have not long given birth and would be uncomfortable with him in my house and my space. He stayed anyway.
During those stays I noticed a couple of times when he was playing with my 4 year old he would 'tickle' in places where an adult should not touch a child. It was over the clothes and only for a second but still made me very unhappy. He also stuck a finger down the back of my 4 year olds 'builders bum' (where his trousers had slipped a little bit) and wiggled, as if to tickle.
I told my partner immediately when this happened then had a conversation about the other times I had seen this behaviour. I told him I didn't want his dad staying again and he had to have a serious conversation with him before he was to see the kids again. The behaviour was sort of explained away by my partner as 'he's just like that' and 'he's handsy'. I still don't think behaviour like that should be brused under the carpet and I'm fuming at my partner that he doesn't appear to be taking my concerns seriously and advocating for his child's safety and wellbeing. A comment was also thrown in about 'washing grandads bum in the bath for 50p'
Fast forward to now and I have just been informed that his dad will be visiting this weekend and he will have the conversation with him in the car on the way over.
I have had conversations with my 4 year old about private areas on bodies and how no-one is allowed to touch there (exception being helping clean and if a doctor needs to examine) and I hope he is confident enough to speak up if it happens again. I have told my partner that if I see anything like that again, I will call it out and it probably won't be pleasant. I'm already kicking myself for not speaking up the previous times it has happened.
I'm dreading them turning up on Friday and the conversation having not happened (my partner is not very strong and he has said its an awkward conversation to have which is why it hasn't happened yet)
I'm not sure why anyone would ever have to have a conversation like this with any normal functioning adult, surely it's obvious it is wrong?!