The word “parent” means more than shacking up with a chick who just happens to have kids. For all I know this guy was a stand up dude who committed one negligent act, but the usual 32 year old male shacking up with a 23 year old who has two small children is not a parent in any sense of the word other than (possibly) a biological one.
Maybe not a parent in the biological sense but he’s a live-in and an adult...parental.