If there is nothing wrong with his parenting, then I am not sure why you have concerns about his parenting decisions? And if his parenting is good, then why are you concerned he’ll share custody if you split? If he did nothing wrong when in the park with 1-year old and then when you take care of both kids and he just stands there, then perhaps I don’t understand your posts.

It sounded like you have concerns about him. If you don’t, then it’s all good