Looking for advice from the parenting community. I (38M) am in a wonderful and loving relationship with my (35F) fiancé and her two year old son from a previous marriage. We are having some trouble with the way her son addresses me. Around the house we call me by my nickname (Not Daddy) however he spends a great deal of time at a daycare center where all of the kids call their parents mommy or daddy. He always calls me daddy even though we try to correct him. I am so incredibly happy that he loves me and we have such a strong bond but it is infuriating his real dad. Since he lives with me full time and real dad only sees him once a week and on certain weekends, it’s a difficult dynamic. I don’t know how to explain to his real dad that the concept of divorce and parent vs step parent is too complicated for a 2 year old to grasp. In time I know that my soon to be step son will understand who his real father is but I’m afraid that scolding him isn’t the right answer. It turns out that we are also having a baby of our own so new baby will definitely be calling me daddy which could make this more of a challenge. I completely sympathize with how real dad feels. This is probably very difficult for him. Any advice?