Just wondering if anyone has any wise thoughts on the subject. DS is 3.9 - he's known DP all of his life, pretty much (I split up with exP when DS was 5mo), and has always got along famously with him. But DP moved into our flat about six weeks ago, and we all moved into a house together just over a week ago. Since DP moved in, and particularly since we moved into our own place, DS has basically wanted nothing to do with him. Lots of crying for me, shouts of "I don't want you!", refusing to speak to him and so forth.
This is all made rather more complex by the fact that DP has a DD (7) who is (mildly) on the ASD spectrum. Up until now, DP has been going back to his old house on the nights/weekends he has her, while his exP goes to stay with her family (keeping up?
). The idea of course was that she would now come stay with us - but she too is completely freaking out about the whole thing - hates the idea of DP being in a different house, doesn't want to live in a different house herself and so on. She really didn't want to come over this weekend, and DP (I think rightly) thought it would be counterproductive to force her. Unfortunately, though, as well as my missing her and wishing very much that she were here with us, and that DP wasn't back at his old "family" home (this is my issue, so massively unimportant in the grand scheme) this seems to have had the effect of compounding the problem with my DS, given that he had what I imagine was in his mind the perfect weekend - ie pure, unadulterated me 
Just not sure how to proceed really. DP's more chilled about it than I am and says it'll just take time. Obviously, I can't really do much about DP's DD (I took lots of pics of the house and mailed them to him so he could show them to her, which seems to have helped a little - she said she liked them, which is great), and just need to trust that she'll come round with time (though any thoughts HUGELY appreciated). But if anyone can advise as to what I should do with DS I'd be very grateful! I thought he'd be fine with it as DP has always been such a presence in his life, but he's clearly not. I've tried talking to him but he's not quite old enough for rational discourse, alas. Not sure whether to come down on him a bit (in a "we're nice and polite to people in our house" kind of way) or back right off. What say all of you??