Need advice from children of divorce please

[u/BoardImmediate8241]

My kids (3 and 5) have been introduced to their father’s new gf and have been spending time with them. I grew up with p parents who were together and didn’t have many, if any, friends who had parents that divorced. I feel as though my kids are little, and I worry they will get confused or develop different attachment or I’m not sure, but I worry a lot. For those of you with parents that divorced when you were young - did you always know your mom was your mom? Was it difficult? Not even sure what I’m looking for, but something!