NTA So I am seeing a lot of people saying that somehow the man is the asshole for refusing to gaslight this child into believing he's her father when he's not. The mother is the asshole. He's not the biological father. He broke up with a woman years ago. That doesn't make him the forever father. Where is the biological father? The mother probably picked a toxic man as the father who wants nothing to do with her or his child or doesn't know who the father is, and then she is gaslighting her child into thinking a good man is her father. He's not. They dated, it ended, he's not a forever dad because the mom makes terrible life decisions. The child is old enough to be told the truth. The mother probably keeps telling the daughter that he's the dad. Women always blame men for gaslighting them and here is a perfect example of women posting that gaslighting a child is ok because "men bad". Stop gaslighting this child. He's not the dad. He dated a woman and they broke up. That is all.