I have 1 child and 2 DSC.
Our child together is 2, my DSC are 11&13.
Any time me and DH have a slight disagreement about anything (and it doesn't even have to be about DSC), he'll make comments about how he feels I'm different toward DSC since our child together was born and that I don't care as much about them. When I ask him for examples of what he means or to tell me what I'm doing differently or to make him think that he can never say, just that it's a 'feeling'. That the knows they are his children and not mine so can't expect me to love them like I do our child but that he feels I don't see them as part of the family anymore, but again can never tell me in what way I do this and it's starting to feel like just a cheap and easy shot to make me feel bad.
I get on well with DSC, I've never had a parent>child relationship with them but I'd say that of an aunt or something. I'm fairly confident that nothing in the way I act around or with or toward DSC has changed. Naturally our relationship or the things we do together have changed as they've gotten older, for example the 13 year old would think I'd grown two heads if I asked if they wanted to do some painting with me or whatever these days 😂 but I don't feel I treat them any differently than I did before. Sure I'm definitely busier, I have a chaotic 2 year old to care for (most of the time by myself) but that's all I can think of.
AIBU to think that if he's going to make these accusations he should back them up with something so I actually know what it is I'm doing that's so terrible? I don't know what it is he expects me to change as I don't feel I'm actually doing anything wrong.
As I said above, this always seems to come up in arguments (that aren't even about the children) and it feels like a 'well YOU'RE so terrible because you are a crap SM' gotcha type of thing.