I have a 10 year old son tyler with my ex. I have primary custody and he gets him on Weeknd. We had co parented well so far. I am from Asia. Where private schools are only good mode of education.

I decided not to marry till my son is gone to college. I am a banker, so I earn well for both of us and the CS I get, I put it in his savings . I also pay for his private school which cost a lot. But I can afford it.

My ex got married to Lyla last year and she brought two kids. One is ten and in same grade as my son. Second is eight. My son already feels his father has taken away there 1:1 by time with the other children. As most activities are group activites. And he gives zero time to son alone. Step mom also try to parent him and he hates it.

Kids are cordial but don't see each others as siblings. So this Weeknd ex and his wife invited me to dinner. I went and after dinner, they told kids to go to room to have discussion with me.

They said they can't afford same private school for the other kids. And for equality of kids, they need to pull my son out of school. They told how beneficial it will be the elder step kid and my son to be in same school and class.

I was pissed and laughed at them. I told their financial issues aren't my problem and I am not changing my son's school. They doubled down. But I stood firm and took my son back.

Since then they are blaming that I want their family to fail and how my son doesn't talk to other kids much. I told them developing the relationship between kids is ex's job , not mine. I don't badmouth them or the other kids. But I don't see it as my responsibility to grow their realtion on his dad's side.

Second, if father is going to put his new kids over his own, it is what leading to Tyler being distant with other kids. They are calling me asshole and his new wife said to me, for Tyler she isn't going to deny her kids a father. I told her that she is no less than evil step monster.

Edit. I forgot to add. Because kids won't have equal things. My son already have more branded things which I can afford and my parents buy him a lot of things. As I am only child and he is their only grandchild. He is pampered a lot by my side and they have issue with that too. I won't deny my kids good things because they can't afford for her children.

Regarding 1:1. Ex said our son needs to adjust for his new siblings and it is family time ;)

Edit. Someone is copying my coomments. saw two accounts doing. It's not me