How Do You Pressure Test Relationships?

i strongly believe that children deserve to still experience as much stability and security as possible inside their homes. One of the difficulties that parents deal with a when they open up, is at finding themselves in relationships with non parents. I feel like i hear a lot of parents who are, who are parenting and trying to date, is like there's a recognition of my relationship with my kid or kids is a partnership that is "non negotiable"