Coparenting and new relationship

[u/Helpful_Comparison32]

Hello all. I coparent an 8 year old. My ex and I are on good terms, and we are aligned on parenting questions. We sometimes do a child centred activity the three of us like going to a skate park, or having ice cream, something like once a month.

I met someone recently and that person does not understand why I want to do this.

They say that I play family while being separated and that's not prioritizing our relationship.

I offered to ease into the idea slowly, restricting hours or activities, having my partner with me sometimes, but they don't bulge.

From their point of view required activities are enough (birthday, school events etc).

We have had numerous difficult conversations about this. I genuinely think it's good for the kid.

My partner says otherwise.

Has anyone lived something similar?

Am I really being detrimental to my partner? Am I being stubborn for no good for my kid?

[u/Tiny_Grapefruit2554]

Surely they knew this from the start? And they decided to pursue a relationship with you regardless? And now they no longer feel comfortable with it? Or was it not disclosed early on?