We've been separated for 3 years, children are now 5 and 8. They stay with me for 4 nights and him for 3 every week so plenty of contact with both of us.
ExH got into relationship just over a year ago with a woman who was widowed with one DS5. They progressed the relationship very quickly and a few months ago bought a new family home altogether. The children found this quite difficult but were starting to get used to the new dynamic however both came home today in tears because the other child has been calling ExH Dad which is confusing and upsetting for them, he has also been telling them it's his house not theirs as he is there all the time and similar nonsense, they also feel like the new partner takes their sons side all the time.
The kids are torn between feeling like they want to be at his house more almost in a possessive marking their territory way and being at home where they are happy, feel secure and everything is a bit simpler.
If this was much further down the line eg they were 5 years plus into relationship, married new children together etc I may find it more understandable and I really do empathise with the little boy who is just looking for a father figure but I can't stand to see my kids so upset and worry about the long term damage to their wellbeing.
Should I contact him about it?
For context the relationship was abusive with extreme coercive control and bullying after the split so we have limited contact but do text about appointments, children arrangements etc.