Mono-I get your point.
But it is a different dynamic.
You don't live with them, so expenses and household things aren't joint.
You don't share a child with them (GG helped raising my oldest and he's the bio-dad of Maca and I's youngest)
You came in the picture 7 months ago? 8? I can't recall. But GG has been my best friend since 1992... I married Maca in 1999. .....