I have a DS who is 3 and my partner has a 6 year old daughter. I see her every time she is with her dad and I always welcome her into my house, feed her, cuddle her, have chats about what she's been up to/ school etc. She is a handful at times, has zero manners and is never grateful for anything we do or give her but my partner tends to ignore her behaviour but will jump on my DS if he acts up( I am strict with my DS when it comes to his behaviour and manners) This has caused so many arguments I couldn't begin to tell you.
So my DS has zero relationship with his dad so he is with me 24/7 So where i go he goes and that's how it's always been so my partner understands this. However recently my partner has put a stop to any days out or treats for my son if his daughter isnt involved too. We have ended up stuck in a really crap routine. But his daughter is truely spolit by her mum goes on regular holidays/days out/ activity days etc so it's not like she's never doing anything. I just feel like my son is now missing out on opportunities because if it doesn't collide with the days his DD comes we can't do anything and then when we do something all together it's pretty much always messed up because of her behaviour.
I feel like it's going to have an affect because I've already got to put up with her behaviour and the different boundaries my partner has for the 2 of them and now it feels like life has to revolve around his DD. AIBU to be annoyed and how can I help this