Originally Posted by MonoVCPHG
I agree that this doesn't necessarily put her "first" emotionally, but the health of their relationship will definitely have a greater overall impact on his life do to financial entanglement. I would think he would be more aware of maintaining their dynamic.
I'm not sure I understand what you mean by being more aware of maintaining their dynamic. The partner he just bought a house with is also married with her own child and lives between the two houses. Buying the house together grew out of the dynamic they already have. I have no sense that this is something they feel the need to protect or maintain, or that other relationship decisions have to be modified so that they can maintain what they have.
I think it comes down to being aware within all the relationships, not trying to protect certain dynamics over others.